Simple in that you simply easy touch panel control with lighted interface</br>Long playtime & long warranty built-in 2200 mAh rechargeable battery</br>HD sound 2 speakers 8 watt?? 16W portable Bluetooth speaker delivers unmatched sound clarity and precision</br>Complete compatibility pair smartphones?? tablets?? laptops and via Bluetooth or connect non-Bluetooth devices</br>DSP technology and build-in mic for calls connect an iPhone/iPad via Bluetooth to activate SIRI function</br></br>Product Description</br></br>Specifications: Bluetooth compliant: V4.0. Speaker size:186x58x60mm. Speaker driver:stereo??40MM?? 4Ohm. Speaker output:8Wx2. Wired port: 3.5mm line-in. Operating frequency: 2.4-2.48GHz. Working voltage:6.6V-7.4v. Battery charging time:3.5hours. Battery capacity:2200mAh. Battery charging voltage:USB5V(500