Chemical type: lithium polymer Standard voltage: 1.5 (V) Rated capacity: 400 (mAh) External dimension: diameter 10mm * height 44mm (mm) Purpose: remote control, toys, mouse, household appliances, etc Battery type: No. 7 battery Number of pieces: 4 Outer package size: 120mm long * 85mm wide Packing list: Battery * 1 charging cable * 1 This product will have high quality and fre shipping all over the world