Features: with TF card slot, USB interface, FM radio, wireless Bluetooth, display Speaker Specifications: Power output: 5W RMS; 4 inch 3 oh 5W Battery Specifications: built-in 1200 mAh, life 6-8 hours. Power input: DC5V / 1mAh Prodcut Size: L250 * D140 * H138mm Bluetooth Speaker Performance Characteristics: 1. 5W high-power speakers, 16-core magnetic properties, sound loud, sound three-dimensional, allowing you to enjoy music. 2. Built-in 1200mah large capacity battery, battery life up to 8 hours, sustained high-power playback, enjoy endless. 3. Multifunction. Support TF card, Bluetooth wireless connection, USB play, FM radio, multi-directional music play. With power display, Playing time, function tips, more humane. Brand No Brand SKU OT776EL0FI3TKNAFAMZ-133574