Carry your music with you anywhere, with hanging hook for use on bicycles and outdoor camping bags Features Bluetooth V2.1 wireless speaker with FM radio 33ft / 10M on class II operating distance In-built omni directional/noise filter Mic Enjoy upto 4 hours music play continous Portable size with metal hook for use on bicycles Full high definition sound delivery Play music from Micro SD card Specifications Color: Blue Interface: Bluetooth V2.1 Support: Micro SD , AUX, Micro USB Play Time: Up to 4hrs Speaker Ouput: 4? / 1x3W RMS Battery : Lithium ion 300mAh Charging Voltage: 5V, 1..5A thru Micro USB Product Weight:100g (approx) Accessories: Speaker, Audio & Charging Cable, Manual