Modes include high steady low steady and slow flashlow battery indicator illuminates when power is less than 25water resistant lightweight weighs only 32 grams 40per unit41fully usb rechargeable no batteries to buy or replaceboulevard f 14 lumen output 14 lumens beam distance 9 meters beam intensity 20cd boulevard r 3 lumen output 3 lumens beam distance 5 meters beam intensity 7cd