The best monitor light bar for ultrawide solves a simple mismatch: a very wide screen leaves the desk in shadow while the ceiling light glares off the panel. A bar that clamps to the top of the monitor throws light down onto the desk and keeps it off the screen. We compared five monitor light bars by bar length, brightness, color temperature range, controls, fit for curved screens and warranty term, using only what each listing publishes.
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Quick picks
Best Overall BenQ ScreenBar Pro: Over 1000lx central, motion sensor, USB-C, 1-year warranty Check price on Amazon
Best for Large Screens Quntis RGB 20: 20 in bar, 144 LEDs, RG0 rated, 15 RGB modes Check price on Amazon
Best Remote Memory Quntis Glow 16.1: 84 LEDs, Ra95, smart remote restores settings Check price on Amazon
Best Curved Fit ONWAY PCTB-0O1: 1000R/1800R curved fit, camera base included Check price on Amazon
The picks
| # | Product | Office Score | Buy |
|---|---|---|---|
| 1 | BenQ ScreenBar Pro | 9.7/10 | Buy on Amazon |
| 2 | Quntis RGB 20 | 9.7/10 | Buy on Amazon |
| 3 | BenQ ScreenBar Halo 2 | 9.7/10 | Buy on Amazon |
| 4 | Quntis Glow 16.1 | 9.6/10 | Buy on Amazon |
| 5 | ONWAY PCTB-0O1 | 9.6/10 | Buy on Amazon |

BenQ ScreenBar Pro
A monitor light bar with over 1000lx central brightness, a 500lx range over 33 by 20 in, an ultrasonic motion sensor and USB-C power.
Pros
- Over 1000lx central brightness with a 500lx range over 33 by 20 in
- Ultrasonic motion sensor lights up within 24 in and shuts off after 5 min
- Fits monitors 0.17 to 2.56 in thick with 1000 to 1800R curvature
- 1-year warranty is stated on the listing
Cons
- No color temperature range is stated in numbers
- 5-watt rating is the lowest stated here
- Touch controls on the bar, no remote
- No light source count is stated
Detailed Review
BenQ lists the ScreenBar Pro as a monitor light bar with over 1000lx central brightness and a 500lx range within 33 by 20 in. The ultrasonic motion sensor detects movement within a 24 in diameter range, lighting up when you approach and shutting down after 5 min of absence. The patented clamp fits monitors 0.17 to 2.56 in thick with 1000 to 1800R curvature, and the bar is powered via USB-C or the included adapter. The listing states a 1-year warranty.
Who it's for: someone with an ultrawide or curved monitor who wants the brightest stated light here and hands-free on and off. Who should skip it: anyone who wants a remote control or a stated color temperature range.
Its Office Score of 9.7/10 comes from performance 33/35, build 22/25, value 21/25, safety 9/10 and warranty 2/5: 87 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Central brightness | Over 1000lx |
|---|---|
| Monitor fit | 0.17 to 2.56 in, 1000 to 1800R |
| Motion sensor | 24 in range, 5 min shutoff |
| Warranty | 1 year |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Asymmetrical optics prevent screen reflection and direct glare, as stated on the listing, so safety scores 9 of 10. 1-year warranty, as stated on the listing. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 2 of 5. See How We Pick.
Lamps near paper and water. Use the supplied adapter, keep the lamp head away from paper, curtains and drinks, and treat flicker-free and brightness figures as the maker's claims.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

Quntis RGB 20
A 20 in monitor light bar with 144 LEDs, 3000 to 6500K color temperature, 15 RGB backlight modes and a 1 year warranty.
Pros
- 20 in bar is the longest stated here
- 144 LEDs with over 800Lux front illumination
- RG0 no-blue-light risk per IEC/TR 62778 and IEC/EN 62471
- 1 year warranty is stated on the listing
Cons
- Remote control only, no motion sensor
- No monitor thickness fit range is stated
- No brightness in lumens, only over 800Lux
- 50,000-hour LED life is the maker claim, not a warranty term
Detailed Review
Quntis lists the ScreenLinear RGB as a 20 in monitor light bar with 144 LEDs, a 3000 to 6500K color temperature range and 15 RGB backlight modes. The front light is rated at over 800Lux with uniformity over 0.9, and the backlight offers over 240 DIY combinations via the remote. The bar passed IEC/TR 62778 and IEC/EN 62471 with an RG0 no-blue-light risk level, and the LEDs are rated for 50,000 hours. The listing states a 1 year warranty.
Who it's for: someone with a large or ultrawide monitor who wants the longest bar here and RGB ambience for gaming or media. Who should skip it: anyone who wants a motion sensor or a plain white-light-only bar.
Its Office Score of 9.7/10 comes from performance 32/35, build 21/25, value 21/25, safety 9/10 and warranty 2/5: 85 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Bar length | 20.1 in |
|---|---|
| Light sources | 144 LEDs |
| Color temperature | 3000 to 6500K |
| Warranty | 1 year |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. RG0 no-blue-light risk per IEC/TR 62778 and IEC/EN 62471, flicker-free, as stated on the listing, so safety scores 9 of 10. 1 year warranty, as stated on the listing. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 2 of 5. See How We Pick.
Lamps near paper and water. Use the supplied adapter, keep the lamp head away from paper, curtains and drinks, and treat flicker-free and brightness figures as the maker's claims.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

BenQ ScreenBar Halo 2
A monitor light bar pairing an 18-degree anti-glare front light with an adjustable ambient backlight, wireless dial and motion sensor.
Pros
- Front light plus adjustable ambient backlight
- Wireless dial with a built-in display
- Motion sensor with auto on/off
- CRI over 95 with 2700K-6500K range
Cons
- Dark grey only; no color options
- Needs desk space for the wireless dial
- Premium BenQ pricing tier
- No RGB color modes, only white backlight
Detailed Review
BenQ lists the ScreenBar Halo 2 with an 18-degree anti-glare front light and a wide adjustable ambient backlight that reduces contrast between the screen and dark surroundings. The listing describes a wireless dial with a built-in display, stepless brightness and 2700K-6500K color temperature, auto on/off with the monitor, a My Favorite mode, a motion sensor, over 50,000-hour LED lifespan and CRI over 95. It mounts on monitors 0.17 to 2.36 inches thick and 1000R to 1800R curved. The stated warranty is 1 year.
Who it is for: gamers who want front task light and ambient backlight in one bar with dial control. Who should skip it: anyone wanting RGB color modes or the lowest price.
Its Office Score of 9.7/10 comes from performance 33/35, build 22/25, value 21/25, safety 6/10 and warranty 3/5: 85 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Front light | 18° anti-glare |
|---|---|
| Backlight | Adjustable |
| Control | Wireless dial |
| Warranty | 1 year |
Figures as published on the retailer listing, collected 21 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Flicker-free and blue-light-hazard-free LEDs are stated, so safety scores 6 of 10. 1-year warranty is stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Lamps near paper and water. Use the supplied adapter, keep the lamp head away from paper, curtains and drinks, and treat flicker-free and brightness figures as the maker's claims.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

Quntis Glow 16.1
A 16.1 in monitor light bar with 84 LEDs, Ra95 color rendering, a backlight and a smart remote with memory.
Pros
- 84 LEDs with Ra95 color rendering
- Flicker-free with a textured shade and eye-care hood
- Smart remote with memory restores last settings
- Patented sliding weighted clip fits curved and thin monitors
Cons
- No warranty term is stated
- No brightness figure in lux or lumens is stated
- No color temperature range is stated in numbers
- 16.1 in is shorter than the 20 in Quntis RGB here
Detailed Review
Quntis lists the Glow as a 16.1 in monitor light bar with 84 LEDs, Ra95 color rendering and a front-plus-backlight design with three modes: Work, Immersive and Design. The smart remote uses touch controls with an orange glow and a memory function that restores brightness and color temperature after a power cut. The patented sliding weighted clip adjusts to fit curved and thin monitors. No warranty term appears in the listing.
Who it's for: someone who wants a mid-size bar with a backlight and a remote that remembers settings. Who should skip it: anyone who wants a stated warranty term or a brightness figure.
Its Office Score of 9.6/10 comes from performance 29/35, build 20/25, value 20/25, safety 8/10 and warranty 0/5: 77 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Bar length | 16.1 in |
|---|---|
| Light sources | 84 LEDs |
| Color rendering | Ra95 |
| Control | Smart remote with memory |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Flicker-free, Ra95 CRI, as stated on the listing, so safety scores 8 of 10. No warranty term, so warranty scores zero. See How We Pick.
Lamps near paper and water. Use the supplied adapter, keep the lamp head away from paper, curtains and drinks, and treat flicker-free and brightness figures as the maker's claims.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

ONWAY PCTB-0O1
A curved monitor light bar with 88 LEDs, 275lm flux, 3000 to 6500K range and a wireless touch remote with a camera base.
Pros
- Designed for 27 to 34 in monitors with 1000R/1800R curvature
- 88 LEDs with Ra95 color rendering and 275lm flux
- 3000 to 6500K stepless color temperature via remote
- Camera base included for webcam setups
Cons
- No warranty term is stated
- No bar length is stated
- Polystyrene shade versus aluminum on the others
- 1.8 lb item weight is stated without a comparison
Detailed Review
ONWAY lists the PCTB-0O1 as a curved monitor light bar with 88 LEDs, a 45-degree asymmetric optical design and Ra95 color rendering at 275lm flux. The wireless 8 cm touch remote adjusts 3000 to 6500K color temperature and brightness, with 10 RGB backlight modes and a memory function. The flexible clamp fits 27 to 34 in monitors with 1000R/1800R curvature, and a camera base is included. No warranty term appears in the listing.
Who it's for: someone with a curved 27 to 34 in monitor who wants a camera base and RGB modes. Who should skip it: anyone who wants a stated warranty term or an aluminum build.
Its Office Score of 9.6/10 comes from performance 28/35, build 20/25, value 20/25, safety 8/10 and warranty 0/5: 76 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Monitor fit | 27 to 34 in, 1000R/1800R |
|---|---|
| Light sources | 88 LEDs |
| Color temperature | 3000 to 6500K |
| Brightness | 275lm |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Ra95 color rendering, 275lm flux, as stated on the listing, so safety scores 8 of 10. No warranty term, so warranty scores zero. See How We Pick.
Lamps near paper and water. Use the supplied adapter, keep the lamp head away from paper, curtains and drinks, and treat flicker-free and brightness figures as the maker's claims.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
More picks to compare
ONWAY Curved Monitor Light BarCheck on Amazon
Quntis Monitor Light Bar with RemoteCheck on Amazon
Govee Monitor Light BarCheck on Amazon
Compare the picks
| Light Bar | Office Score | Bar length | Brightness | Color temperature | Controls | Warranty | Amazon |
|---|---|---|---|---|---|---|---|
| BenQ ScreenBar Pro | 9.7/10 | 19.68 in wide | Over 1000lx central | Adjustable, range not stated | Touch and motion sensor | 1-year warranty | View on Amazon |
| Quntis RGB 20 | 9.7/10 | 20.1 in | Over 800Lux | 3000 to 6500K | Remote | 1 year warranty | View on Amazon |
| Quntis Glow 16.1 | 9.6/10 | 16.1 in | Not stated | Not stated in numbers | Smart remote | Not stated | View on Amazon |
| ONWAY PCTB-0O1 | 9.6/10 | Not stated | 275lm | 3000 to 6500K | Wireless remote | Not stated | View on Amazon |
| BenQ ScreenBar Halo 2 | 9.7/10 | Not stated | Not stated | Not stated | Wireless controller | Not stated | View on Amazon |
Specifications are manufacturer rated as listed, collected 22 October 2026. Two of the five state a warranty term.
How we scored them
The Office Score weighs performance (bar length, brightness, color temperature range and controls), build (materials, clamp and fit), value for the stated specs, safety and warranty. For a light bar, safety means stated eye-care features such as no-glare optics, flicker-free light or a blue-light risk rating; four of the five state one. Two listings state a warranty term: the BenQ ScreenBar Pro and the Quntis RGB 20, each at 1 year. How we pick explains the weights.
| Product | Office Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| BenQ ScreenBar Pro | 9.7 | 33 | 22 | 21 | 9 | 2 |
| Quntis RGB 20 | 9.7 | 32 | 21 | 21 | 9 | 2 |
| Quntis Glow 16.1 | 9.6 | 29 | 20 | 20 | 8 | 0 |
| ONWAY PCTB-0O1 | 9.6 | 28 | 20 | 20 | 8 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
How to choose the best monitor light bar for ultrawide
Match the bar length to the screen
Bar length decides how much of the desk gets direct light. The Quntis RGB 20 is 20.1 in, the BenQ ScreenBar Pro is 19.68 in wide, and the Quntis Glow is 16.1 in. The ONWAY and the BenQ Halo 2 state no bar length. A longer bar spreads light across more of a wide desk, while a shorter bar suits a standard 16:9 screen. If you are still choosing the panel itself, see our multi monitor mount guide.
Check brightness and color temperature
Brightness is stated in different units here, so compare within the same unit. The BenQ Pro lists over 1000lx central with a 500lx range, the Quntis RGB 20 lists over 800Lux, and the ONWAY lists 275lm. The Quntis Glow states no brightness figure. For color temperature, the Quntis RGB 20 and the ONWAY both list 3000 to 6500K stepless; the BenQ Pro says adjustable without numbers. The listings describe the 3000 to 6500K range as warm to cool white.
Fit for curved and ultrawide monitors
Not every clamp suits a curved panel. The BenQ Pro fits monitors 0.17 to 2.56 in thick with 1000 to 1800R curvature, and the ONWAY is designed for 27 to 34 in monitors at 1000R/1800R. The Quntis RGB 20 fits ultrawide curved monitors of 1500R or above, and the Quntis Glow uses a sliding weighted clip for curved and thin monitors. Measure your monitor thickness and curvature before ordering, and check monitor arms and stands if the screen itself needs positioning.
Controls: remote, touch or motion sensor
The BenQ Pro is the only one with a motion sensor: it lights up within a 24 in range and shuts off after 5 min of absence. The Quntis and ONWAY bars use remotes, and the Quntis Glow smart remote restores your last settings after a power cut. The BenQ Pro also has touch buttons on the bar itself. If the bar will sit out of easy reach, a remote or motion sensor matters more than touch controls. For the rest of the desk setup, see our desk lamp under 50 picks.
Frequently Asked Questions
What size light bar do I need for an ultrawide monitor?
Match the bar to the screen width. The longest here is the 20.1 in Quntis RGB 20, followed by the 19.68 in BenQ ScreenBar Pro and the 16.1 in Quntis Glow. The listings give no sizing formula, so use the stated bar length against your monitor.
Do these light bars work on curved monitors?
The BenQ Pro fits 1000 to 1800R curvature, the ONWAY fits 1000R/1800R, and the Quntis RGB 20 fits 1500R or above. The Quntis Glow uses an adjustable clip for curved monitors. Check your monitor curvature rating first.
Which light bar has a motion sensor?
The BenQ ScreenBar Pro has an ultrasonic motion sensor with a 24 in range and a 5 min shutoff. The others use remotes or touch controls.
Do any of these state a warranty?
The BenQ ScreenBar Pro states a 1-year warranty and the Quntis RGB 20 states a 1 year warranty. The other three state no warranty term.
What does Ra95 mean on these listings?
Ra95 is a color rendering index value the Quntis and ONWAY listings state; a higher value means colors look more accurate under the light. We report it as the maker claim.
Related guides
See every desk lamp and light bar guide and all desks and desk lighting guides. Also see our monitor stand Vesa.
More picks: standing desks, monitor arms and stands, desk lamps under 50.





