PowerSmart 3.6V 2200mAh 7.9Wh Replacement for SONY MZ-B3, MZ-E3, MZ-R2, MZ-R3, MZ-R30, MZ-R35, MZ-R4ST MD Walkman Battery, Compatible Part Numbers: LIP-12, LIP-12H Battery Type: Li-ion Voltage: 3.60V Capacity: 2200mAh Color: Dark Grey Dimension: 68.20 x 20.00 x 23.00 mm||Rate: 7.90 Wh Weight: 57.25 g Product Type: Replacement Battery (Brand New) Condition: New, 1 year warranty! Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device. Ship from California, United States! Approximate transport time is 2 to 6 business days depending