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  • Daylight Visible Flash (DVF) keeps you visible even during bright daylight hours
  • Highly visible Laser Lanes project ultra-bright laser lines on the ground, giving you your own virtual lane
  • Ultrabright 150-lumen output provides exceptional nighttime illumination
  • 7 Modes, including Group Ride Mode so you can be seen without distracting fellow cyclists
  • Low battery indicator ensures you always know when to charge up
  • USB-rechargeable for convenient charging
  • Easy on- and-off seat post strap mount with quick-release tab for fast removal
  • Compatible with round and aero seat posts
  • System Includes: LED tail light with Laser Lanes, seatpost mount and USB charging cable
  • Backed by NiteRider lifetime warranty that covers any defects in material and workmanship, mechanical components (housings, covers, mounts and fasteners) and LEDs
  • FL1 Standard IP64, water resistant; complies with FDA standard for lasers, notice No. 50, 2007


View all NiteRider Rear Bike Lights

REI membership


Best Use Cycling
Bulb Type LED
Number of Bulbs 3
Max Light Output (Lumens) 150 lumens
Taillight Mounting Multiple Locations
Battery Mount Integrated
Rechargeable Yes
Charge Time 4 hours
Batteries Lithium polymer
Integrated Battery Yes
Battery Life On High 4 hours
Battery Life On Low 21 hours
Battery Life Flashing 5 hours
Weight 116 grams
Rated 1 out of 5 by from Bright but terrible mount - fell of bike Very bright flash mode but terrible mount fell off bike. This is a very bright light is flash mode. Good for Daytime. The seatpost mount is awful. It extends the light way to far so the center of gravity is very far from the post and the clip is very weak. On a short ride the light bounced right out of the mount. I'm returning before I lose it and can't return it.
Date published: 2016-08-17
Rated 3 out of 5 by from Falls off easily One thing I forgot to mention is that there is a tricky latch to hold the light to the holder. If you don't get it exactly right, it will fly off the first time you hit a bump. So, I used a velcro strap to wrap around the attachment point to keep it in place if I don't get the latch fully engaged.
Date published: 2016-09-20
Rated 4 out of 5 by from Bright flash, decent charge, poor mount. Super bright flash mode for daytime. I've gotten 10 hours on one charge with bright flash mode. The light will not lock in position facing perpendicular to on coming traffic no matter what adjustments I make to the tension screws. Since I only use it in the same bike with constant seat post angle, I poured glue into the ratchet mechanisms. Holds its place now. I like the thick strap/buckle that connects it to my seat post.
Date published: 2016-11-10
Rated 5 out of 5 by from NiteRider Sentinel 150 Rear Bike Light I just bought the combo light and rear light, few weeks ago, so far I'm satisfied, instead of mounting the rear light on my seat post, I attach it to my pannier, it works great, no falling off, I have two other rear lights too, one on the seat post and the other on the other pannier, I commute to work every day early in the morning before the sun comes up, so I want that visability.
Date published: 2017-05-08
Rated 5 out of 5 by from More visible on my adult trike Bright light day or night. I feel safer with this light. It blikes or stays constant.Special setting gives 2 bright lines on psvement.
Date published: 2017-04-22
Rated 5 out of 5 by from NiteRider Great product, easy to install, seen by drivers a ways back.
Date published: 2016-08-29
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Can this clip to a backpack strap?

Asked by: cb9
This bike light can clip to a backpack strap.
Answered by: REIservice
Date published: 2016-11-14

Does this include a helmet mount?

Asked by: Steve from Powderhorn
​A helmet mount is not included.
Answered by: REIservice
Date published: 2017-02-07
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