Bluetooth chip:BK/CSR Power:5W*1 Play time:15-20h(average volume) Charge time:2.5h Input:DC 5V/1000mA Output:DC 5V/500mA Battery:2200mAh Transmission distance:10m Features: waterproof IPX66 Power bank functions Camera shutter funtion Easy ONE-button operation Rechargeable battery Power indication light AUX-IN Drop-resistant Convenient USB charging Handsfree With portable sicilicone strap OEM colors options