USB standard power supply interface, simple operation, plug and play USB power supply interface input range: 5V plusmn;5% on 0.5~2A, suggested 2.4A Charger plug: Micro- 1.25 and JST-PH 2.0 Battery charging termination voltage: Li-Po type 4.20V plusmn;0.5% Product weight: 52g colour: black Material: plastic size: Product dimensions: 73x25x10mm Package Contents: 4 x 1S LiPo Battery USB Charger 3.7V/4.20V Version Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.