1.Size:42x14x7mm,***allestintheworld2.Weight:About18grams(playerbodywithbattery)3.Power:Rechargeablebattery4.Touchkey,USB2.0HighSpeed5.Storagemedia:on-boardflashmemory(128M/256M/512M/1G/2G/4G)6.Bitrates:MP3format8~320kbps,WMAformat32~384kbps7.S/Nratio:90dB8.EarphoneO/P:50Mw,Frequencyresp***e:20Hz~20kHz)