PowerSmart 3.8V 600mAh Li-ion OXY-003 Battery for NINTENDO Game Boy Micro OXY-001 Battery Type: Li-ion Voltage: 3.8V Capacity: 600mAh Color: White Dimension: 36.60 x 24.70 x 6.70 mm Weight: 15 g Product Type: Replacement Battery (Brand New) Condition: New, 1 year warranty!