Waterproof and submersible this flashlight has a textured lens which produces broad, soft illumination. The rubberized grip is shaped for easy one handed operation with the textured bezel being very easy to grasp and turn. Includes a carbiner for easy attachment to your back pack, vest, tent, or wherever else you might find convenient. A single, included AAA battery is all it takes to get almost 12 hours of steady light and 16 hours of flashing SOS signal from this great light . Handy and practical!