2 Pack – Replacement for Sony BP-HP550-11 Battery – Compatible with Sony BP-HP550-11 Headphone Battery – Compatible with Sony MDR-RF860 MDR-RF4000 MDR-RF970 MDR-RF970RK MDR-RF925 (700mAh 2.4V NI-MH)

Please note: This is an UpStart Battery brand replacement part, not an OEM product. This product is not affiliated with any OEM brands and is not covered under any warranties offered by the original manufacturers. Any warranties for this product are offered solely by Upstart Battery. All mentions of brand names or model descriptions are made strictly to illustrate compatibility. All brand names and logos are registered trademarks of their respective owners.
Item model number ‏ : ‎ MDR-RF4000-2BATT-DL1
Date First Available ‏ : ‎ September 12, 2013
Manufacturer ‏ : ‎ Upstart Battery
ASIN ‏ : ‎ B00F5D3SVA

Replacement Sony BP-HP550-11 Battery
Replacement for Sony BP-HP550-11 Headphone Batteries
Quantity: 2, Lifetime Warranty, Compatible with Sony MDR-RF860, MDR-RF4000, MDR-RF970, MDR-RF970RK, MDR-RF925
Capacity: 700mAh, Upstart Battery Brand