NiteRider Sentinel™ 250 Bike Taillight with Laser Lanes

250-lumen Daylight Visible Flash (DVF) tail light

Laser Lanes project two visible lines to define riding space

7 modes with run times from 5:00 to 45:00 hours

Micro USB rechargeable, 3:00 hr charge time

Fits seat post diameters from 15.8mm to 31.6mm

Q1: How do I find the right mount setup for the Sentinel 250?
The Sentinel 250 includes a seatpost mount that fits post diameters from 15.8mm to 31.6mm, covering the common 27.2mm size. Our staff can confirm it fits your seatpost before you leave the shop.

Q2: Is the Sentinel 250 compatible with other NiteRider lights I already own?
Yes, it's designed to run alongside any NiteRider front light or headlight as part of a full lighting setup. Our team can help you put together a matched front-and-rear combination for road or commuter riding.

Q3: Is this device compatible with my seatpost and riding style?
The Sentinel 250 works with most standard round seatposts within its size range, and its Laser Lanes and Daylight Visible Flash modes suit commuting and road riding where being seen by traffic matters most. Bring your bike in and our staff can confirm fit and recommend the best mode for your routes.