Light set volt 80rapid micro excellent value perfect for commuters volt 80xc 2 modes constant flash runtime 80lm 15 hrs 80lm 5hrs helmet mount compatible recharge time 15 hours usb rechargable rapid micro triple led 15 lumen output li on battery usb rechargable 4 modes constant flashing rapid and pulse runtime 3 30 hrs depending on mode automatic flash when low on battery