Olight R50 2500 Lumens Seeker Cree XLamp XHP50 LED Rechargeable Flashlight with Rechargeable 26650 Battery and SKYBEN USB Light Features a Cree XLamp XHP50 LED, maximum output of 2500 lumens,and runtime ups to 50hours. Side switch cycles through three brightness levels. double click access to Turbo while triple click access to Strobe. Built-in rechargeable 26650 4500mAh lithium battery with charging cable included. From the off position automatically return to your last brightness level with the built in memory function. Multi-function side switch featuring a battery power indicator, which glows red when battery runs low. The R50 seeker is a powerful and versatile flashlight ideal for police, security, industrial, and home applications alike.