Wentronic MP f/ ERI T610/T630 (BST-25) 700mAh Li-Pol. Battery technology: Lithium Polymer (LiPo), Battery capacity: 700 mAh, Battery voltage: 3.7 V. Weight: 18 g. Colour of product: Black. Dimensions (WxDxH): 61 x 37 x 6 mm