Review on Enhance safety on Busy Roads with Cygolite Hotshot Pro-150 Lumen Bike Tail Light: 6 Modes, Customizable Flash Speed, Compact & Water Resistant Design, USB Rechargeable & Secure Hard Mount by James Roper

UPDATE: I've used it on the go for 24 consecutive days without charging. The total driving time is about 40 minutes round trip, so a single charge lasts about 16 hours or more than 4 weeks of commuting. I am very happy. As for the low battery warning, I didn't understand that part. But now I know that there should be at least 3 weeks between charges unless I'm going on a long trip. And in my experience, the mount feels very solid. ------------------------------------------------ -- - I doubted it was really that bright. But I can confirm that this is the brightest taillight I have ever seen, brighter than my previous 7 LED Cateye Rapid5 TL-LD650. And seen from the side, a very important feature to warn drivers in lanes. When turning on, press and hold the button for about 3 seconds. When you let go, the light will sometimes dim for a second and then begin a cycle of flashing. No problem, just embarrassing. Looking at the photo I wasn't sure how big this light was. The picture makes it huge. Its height is 2¼ inches.