ULTRALAST(R)
2.4V; Long-lasting; 700mAh; NiMH; Rechargeable battery; Compatible with Radio Shack(R) 33-122, Sony(R) MDR-RF925RK, Sony(R) FS-251, Sony(R) MDR-RF4000, Sony(R) MDR-RF4000K, Sony(R) MDR-RF810, Sony(R) MDR-RF810RK, Sony(R) MDR-RF840, Sony(R) MDR-RF840RK,...