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)
2x Pack Sony BP-HP550-11 Battery - Replaces Sony BP-HP550-11 Headphone Batteries (2.4V, 700mAh, NI-MH, Lifetime Warranty)