Portable Bluetooth Speaker Wireless FM Radio H20 Specifications: Wireless Verion: 4.1 Support: A2DP V1.3, AVRCP V1.5, HFP V1.6, HSP V1.2 Transducer: 2 x 52mm Output Power: 2 x 20W Frequency response: 70Hz - 20KHz SIgnal -to -noise ratio: >80dB Battery TypeLithium-ion polymer (7.4V, 3000mAh) Power Supply: 9V/3A USB charge out: 5V/2A (max) Music Play Time: up to 15 hours Battery Charge Time: 4.5hours Wireless trasnmitter frequency range: 2.402 - 2.48 GHz What's in the box 1 x wireless speaker 1 x USB cable 1 x Aux cable