Review on 🚴 BrightRoad Smart Bike Tail Light with Reflectors - Bright 40 Lumens Warning LED Rear Bike Light, Rechargeable & IPX6 Waterproof - Auto On/Off Sensor for Safety Bicycle Helmet Light by Tony Reid

I put this on my road bike and was very pleased. Battery life seems exceptional and it seems to charge fairly quickly. At first I strapped it to my saddlebag but a couple of times it snapped when I hit bumps so I switched to the included strap and haven't had any issues so far. The strap has a slight angle so the light is even when you attach it to the seatpost, which is nice. And it's BRIGHT! Don't look at it when you turn it on or you'll see smudges for minutes afterwards. In addition to the always-on setting, there are also various flash options. Very happy with it.