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 "Clip-on" attachment for belts and pockets , And the S-310 with a key chain; Effectively covers an area up to 6 to 8 square feet ; Battery: CR2032 x 1 ; PACKAGING: INNER BOX:34cm*10.5cm*16.5cm(25pcs/CTN) PACKAGING:35cm*22.5cm*34.5cm(100pcs/CTN) 20'S: 100,000pcs (1000CTN) G.W.: 4.00KG N.W.: 3.50KG