Wentronic MP f/ NOK 2680/7610 (BL-4S) 700mAh Li-Pol. Battery technology: Lithium Polymer (LiPo), Battery capacity: 700 mAh, Battery voltage: 3.7 V. Weight: 16 g. Colour of product: Black. Dimensions (WxDxH): 50 x 38 x 4.5 mm