1.2G memory card 2.3W and music player 3.3.7V/1200mAh li-ion rechargable battery 4.speaker:2w Specification Item NoXS-mp301Light source3W CREE LEDLight power rated3WLuminous flux120lmRuntimeflashligh: 3h;mp3 player:6h-24h;Alarming:4hMusic formatmp3.wmaMemory card2GB micro card(included)Accessories1 usb cable,1 clip for bike(included)BatteryRechargeable Li-ion 3.7V/4000mAh,charge over 1000 ...