With this slim design speaker 5W super bass you will turn any Friday afternoon at the office into a party. High quality aluminum housing with vegan leather, with on/off button, fwd and bwd, volume button, it’s all included in this super model. There is also a Micro SD card opening to store music. Lastly it comes with a lanyard to hang the speaker easily around an object or your neck. Bluetooth version 4.2 with a range like 10 meters (30 feet), charging time is about 3 hours and working time (@ 70% of the volume) is about 4 hours.