S09 Metal LED Bluetooth 4.0 TF Stereo Hifi Mini speaker Super Bass Music Player Working range: up to 10m Working time: 10 hours Speaker: () 45mm Loudspeaker output: 3W Frequency response: 280Hz-16KHz Signal to-noise: 95dB 9. Distortion: 0.5% Battery voltage/capacity: 820mah Battery charging voltage: 5V0.5V Battery charge time: 2 hours Package include 1 x LED Bluetooth Stereo Hifi Mini speaker 1 x Two-in-one Cable