This flashlight produces a maximum 800 lumens at 820ft (250m) of distance from an included 16340 rechargeable Li-ion battery or one CR123A. Use the tail cap switch for on/off and the momentary-on function while the side switch on the head is for mode selection. The two-position body clip hold this light securely to pocket or pack in a body that is only 3.6” long—perfect for everyday carry. IP68 rating makes it dust and water proof. The Fenix PD25R rechargeable flashlight is perfect for on the job, outdoor adventures, or your daily EDC needs.