Turn your seatpost into a glowing saber that drivers notice from blocks away. LumaGuard is a rear bike light that projects a tall saber-bright COB light bar off the back of your bike, making you visible from far down the road rather than relying on a single tiny red dot.
Instead of a lone pixel, this light uses a vertical chip-on-board strip to create a noticeable saber glow that drivers can read from behind and from the sides. It offers three modes—steady, flash, and pulse—to adapt to the road every night.
Weatherproof construction with a sealed ABS shell shrugs off rain and mud. A Velcro strap secures to nearly any seatpost in under 30 seconds—round, aero, or carbon—with no tools or rattling clips.
Power comes from a 300 mAh lithium-polymer cell, USB-C recharge, and approximately 40 minutes of full charge, delivering up to 12 hours of glow depending on mode. Choose from Red, Blue, Green, Orange, or Rose to match your setup or safety color preference.
The saber-glow COB bar places illumination along the strap for rear and side visibility, rather than relying on a single small LED. It remains a bright line down the road that cars can clearly perceive at night.
Three quick steps to glow tonight
- Wrap the Velcro strap around your seatpost and tighten until secure—works with most frame types.
- Charge via USB-C; a full top-up takes about 40 minutes with a standard cable.
- Tap the power button to switch between steady, flash, and pulse, then ride.
| LumaGuard | Standard Red Blinkies | Disposable Battery Lights |
|---|---|---|
| Saber-glow COB bar visible rear + side | ❌ Single dim LED, narrow rear angle | ❌ One small bulb, hard to spot |
| Waterproof ABS, velcro fits any post | ❌ Plastic clip cracks, not weather-rated | ❌ Not sealed, falls apart in rain |
| USB-C charge, 12-hr run, 5 color options | ❌ AA batteries die fast, color locked | ❌ Button cells you keep buying |