Supports Bluetooth playing and hands-free talking; Support TF card (MP3 format); Supports MP3 MP5 player IPAD and IPHONE; Continuous working time: 3~4 hours; Bluetooth transmission distance of 10 meters; Microphone transmission distance: 1 meters; With power on voice prompt; Double horn double diaphragm 1. Bluetooth function 2. Memory function play from off point 3. Built-in lithium battery environmental protective and practical 4. Using high fidelity speakers with more natural and delicate sound 5. The audio input interface: 3.5mm standard headphone jack for computer and mobile phone etc.. 6. Built-in microphone support hands-free phone talking 7. Support MP3 music format decoding.