Trendwoo Bluetooth Bicycle Speaker with Selfie Function and LED Lighting This is a waterproof Bluetooth speaker for bicycles. Enjoy your favorite music when you are cycling. 4 in 1 Multi-function - Selfie Function, Flashlight, Hands-free function and AUX playing The selfie function is compatible with all IOS system and most Android system. Allows you to take pictures by yourself easily. Built-in original CREE LED light up to 250m+ is great for cycling at night or in places where visibility and safety are a concern. Charger for detachable 18650 Li-ion battery which can be used on intercom, toy, portable device etc. Support playtime up to 10 hours. Product comes with 12-month warranty. 24/7 customer service available.