Modes include low flash high flash pulse flash 2 low 1 high flash and high steadybattery indicator red led lower than 25 blue led fully chargedwater resistant lightweight weighs only 22 gramsmulti fit quick release system allows easy tool free onoff seat posts fits sizes 1032mmfully usb rechargeable no batteries to buy or replacelumen output 14 lumensbeam distance 14 metersbeam intensity 49cd