Wentronic MP f/ NOK 6111/7370 (BL-4B) 700mAh Li-Ion. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 700 mAh, Battery voltage: 3.7 V. Weight: 14 g. Colour of product: Black. Dimensions (WxDxH): 46 x 33.5 x 5.5 mm