Brand: Kimafun - Model: KM-670 - Color: Black - Material: Plastic housing - Max. output: 15W - Frequency response: 70Hz~12KHz - Output resistance: 4ohm - Working voltage: 6~8.4V - Charging time: 6~8 hours - Battery life: up to 16 hours - Can be used as microphone power amplifier and speaker - With audio in connected with digital device to play music - Accessories: - 1 x Microphone (97cm-cable) - 1 x 100~240V power charger (US plug / 109cm-cable / DC 10V 400mA output) - 1 x 3.5mm audio cable ( 92cm-length) - 1 x Strap ( 65cm-length) - 1 x Chinese user manual