PowerSmart 2.4V 700mAh Ni-MH BP-HP550-11 Battery for Sony MDR-RF970, MDR-RF970RK Wireless Headphones The brand "PowerSmart" is our exclusive registered trademark, products trademarked " PowerSmart" are marketed and sold exclusively by power198 2.4V 700mAh Ni-MH || Size: 46.15 X 23.30 X 11.8 mm 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.