The NiteRider Sentinel 250 is a rear bike light that projects laser lines onto the road to create a visible buffer zone around the rider at night. Daylight Visible Flash (DVF) technology extends that visibility into daytime riding as well, giving the 250-lumen light a role in both low-light and bright conditions.
Weighing 116 grams, the light runs on a 3.7-volt, 500 mAh lithium-polymer battery and recharges through a micro-USB port in about three hours. Seven modes offer run times up to 45 hours, and a low battery indicator flags when a charge is needed. An IP64 rating adds water and dust resistance for varied weather conditions.
Quick Facts
| Feature |
Specification |
| Maximum Brightness |
250 lumens |
| Maximum Run Time |
45 hours (mode not specified in source) |
| Charging Type |
Micro-USB rechargeable |