1.Replacement battery for zune 2nd Gen (4GB/8GB/Flash) 2, Green and safe 3,a ... year warranty 4,in stock Replacement battery for zune 2nd Gen (4GB/8GB/Flash) 1> High capacity battery2> Highly quality ... ++Capacity550mAhVoltage3.7VColorWhiteCharging life CycleOver 500 timesCertificateCE,RoHS,UL,FCCCompatible Modelszune 2nd Gen(82/120GB)Benefits DurabilityHigh capacity battery enable longer standby ...