Small and elegant made of metal that can be used as a hands-free kit. Playing music via Bluetooth (Version 4.2), micro SD card or the 2 in 1 AUX and USB cable included. The product complies with relevant European Union Directives and has the CE Certificate. Technical specifications: output power: 3W x 1, 3D stereo effect, voltage: 5V S/N ratio: ≥ 80 dB, working time: 1-2 hours, 300 mAh battery