Best and reliable companion for camping, hunting, fishing, farming sleeping, live-stock farming, working at night, etc; It's environmental, no smell and causes no harm to human beings, pets and animals; Led flashlight: Uses three ultra bright white leds, lighting time can up to 10 hours in continuous use; It can repel most mosquito away effectively; Can be clipped to clothing or backpacks; 2-in-1 style good for promotion; Completely portable - the s-310w with "built-in" strap for wrist and ankle placement and with a key chain; Effectively covers an area up to 6 to 8 square feet; Battery: Cr2032 x 1;