ZEALOT Ardor S1 Multifuctional Ultra Portable Wireless Bluetooth Stereo Speaker-Hi-Fi,TF Card Slot,Flashlight,PowerBank 4000mAh,Line in Audio Input,Waterproof,Hand-Free Call,FM Radio-Blue Easily Plays music with bass effect via bluetooth, Micro SD card (TF card) or FM radio; Built-in 4000mAh battery, can output power to external devices via USB port as a powerbank; 3 mode flashlight: high,low,strobe; Strobe mode can be used as warning or SOS in outdoor activities; It can be easily mounted on the bike by bracket and Silicone protective sleeve ensure waterproof and shockproof. Latest bluetooth 4.0 technology works with virtually any bluetooth-enabled device (smartphones, tablets, PCs);