Jeffre Parkswrote a review of NiteRider Sentinel 150 Tail Light on March 20, 2017
Familiarity: I've used it once or twice and have initial impressions
The light looked like a great light but from the beginning I questioned the way it attached to the seat post. You have a nice rubber bracket then the light clips into the bracket needless to say my thoughts were correct the light fell off some where during my ride. I have the bracket but no light so that was a 60 dollar ride and I also have no idea when it came off to go look for it.