Review on Refly Xlite100 Intelligent Bike Tail Light - USB 🏼 Rechargeable LED Brake Lamp with Motion Sensor, Waterproof Night Cycling Flashlight by Michael Ghosh

I love this item. It turns off automatically when I'm not using it and charges relatively quickly. It has trouble staying square on my D-shaped seatpost. It's for the round. That's my bike's problem, not the light, so I'm not deducting a star. Maybe next time I'll go with the saddle mount, realizing I'd probably never take it off; even for a race. When I have light, I feel safer. It's light but small so it doesn't spoil the look of your bike. Big plus for me :)