Lenmar Replacement Battery for Nintendo Game Boy Micro Replaces OEM Nintendo OXY-001 OXY-003 Fits: Nintendo Game Boy Micro Replaces: Nintendo OXY-001, OXY-003 3.8V / 480mAh Lithium Ion 1 Year Warranty Fits Nintendo Gameboy Micro Fits Nintendo Game Boy Micro Replaces OXY-003 3.8V 480mAh Lithium Ion