... 2.ROHS,CE..cetificates 3.Built-in input and output jack Specification•Batterytype: Lithium polymer •Capacity:2000mAh •Input: 5V/0.5A ... , silver, blue • Product Features•1, Built-in input and output jack, no additional cablescarrying brings the perfect wireless experience;2, High ... ;3, lithium polymer battery for more safety ;4, LED display power usage . Portable Power Bank SX-702