The IFL 660-R Waterproof LED Torch with Battery Option from Intova distinguishes itself from the IFL-660 model by its capability to use an optional rechargeable 18650 battery in addition to the two included CR123 batteries. The IFL 660-R is a concentrated beam Cree LED flashlight with a maximum output of 300 lumens. It is waterproof to 400' and constructed from knurled anodized aluminum alloy for durability and ease of handling. It features a magnetic slide switch, double O-ring protection and a sturdy, rubber coated wrist lanyard. Its beam angle is 7º, it offers a maximum of 3 hours runtime with 2x CR123 batteries and a color temperature range of 6000-7000K.