2 Genuine Sony BP-HP550 NiMH Rechargeable Batteries for MDR-RF950R Headphone Etc | eBay
Synergy Digital Wireless Headset Battery, Works with Sony BP-HP550-2 Wireless Headset, (Ni-MH, 1.2V, 700 mAh) Ultra Hi-Capacity, Compatible with Sony BP-HP550 Battery - Walmart.com