Technaxx Powerbank TE-23. Output voltage: 3.7 V, Output current: 500 mA, Solar panel current: 100 mA. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 1500 mAh, Battery voltage: 3.7 V. Colour of product: Black, Yellow. Package dimensions (WxDxH): 75 x 145 x 20 mm, Package weight: 122 g