BenQ ScreenBar Halo 2 Monitor Light Bar Review

TL;DR

The BenQ ScreenBar Halo 2 is the gold-standard monitor light bar for coders, and the Halo 2 specifically adds a backlight (eliminating the dark halo behind the monitor) and a wireless puck controller. The asymmetric LED optic puts light on the desk and keyboard without bouncing glare back into the screen — which is the entire point. If you code in a dim room and squint at your keyboard, this is the right upgrade.

Why It Matters

Desk lighting matters more than most coders realize. Overhead lights cause screen glare; desk lamps eat real estate; ambient room light is uneven. A monitor light bar puts the light source above the screen, angled correctly, with zero desk footprint. The Halo 2's backlight further reduces eye strain by eliminating the dark frame behind the monitor that causes pupil-fatigue mismatches.

Key Specs

Mount: monitor clamp (compatible with most flat and curved monitors)
Light: asymmetric LED optic — desk-facing
Backlight: rear-facing soft halo (Halo 2 feature)
Color temp: 2700K-6500K adjustable
Brightness: stepless dimming, ~800 lux at 45cm
Controller: wireless puck (no buttons on the bar)
Power: USB-C
Auto-dimming: ambient light sensor

Pros

Asymmetric optic eliminates screen glare — the headline feature
Backlight reduces eye strain in dark rooms
Color temperature adjustment is genuinely useful (warm at night, cool by day)
Wireless puck stays accessible while keyboard's busy
USB-C power simplifies cabling
Build quality is premium

Cons

Expensive vs. cheap clones — pay for the optic and the brand
Curved monitors over a certain radius may not clamp well
Not bright enough for desks deeper than ~80cm
Wireless puck adds another thing to misplace
Auto-dimming sensor can be over-eager — turn it off if it bugs you

Who It's For

Coders working in dim or evening conditions. Anyone with eye strain from existing desk lighting. Streamers/video-call workers needing fill light without face glare. Skip it for cheap clones (acceptable for casual use), shallow desks (built-in keyboard light is enough), or workers in bright daylight.

How to Use It

Clamp on the monitor's top edge. Plug into a USB-C port (laptop, hub, or wall adapter). Use the puck to set: brightness around 60-70%, color temp 4000K for daytime / 3000K for evening, backlight to taste. Position the bar so its lower edge is just above the bezel, angled to light the keyboard. Re-evaluate angle if you change monitor height.

How It Compares

Vs. original BenQ ScreenBar (no halo): Halo 2 adds backlight; original is cheaper. Vs. cheap clones (Quntis, Joly Joy): clones work but optic and color accuracy lag; ScreenBar is worth the upgrade if you sit there 8+ hours daily. Vs. desk lamps: lamps eat real estate; light bar doesn't.