Cyclists, this JHMUERN bike tail light is like having your own turn signal system for your bicycle! It's got everything you need for safe night riding. The main feature? Actual turn signals that you control with a handy remote - just press left or right buttons and the yellow LEDs flash to show your direction. There are five lighting modes total: steady red, red flashing, all flash, plus those left and right turn signals. With 32 ultra-bright SMD LEDs (14 red, 18 yellow), this thing is visible from 150 feet away even on rainy or foggy days. There's even a 120dB horn built right in for extra safety warnings when you're turning. It's IPX4 waterproof so rain won't bother it, and the 700mAh battery recharges via USB in about 2 hours, giving you 2.5 hours of use. Installation is tool-free - just use the silicone straps to attach the remote to your handlebars and the light to your seat post. The remote uses CR2032 batteries and has about 16 feet of range. You can even put this light on your helmet, backpack, or your pet's collar! Seriously, this makes night riding so much safer and more convenient.