Special highlight: • Energy saving • USB rechargeable • One handed control • Highly recommended for outdoor use as it's waterproof • Pocket size, easy to carry • The wide angle mode is realized by moving the extended distance between the lens and the emitter large range and wider exposure. • 3 mode: Light switch ( switch lighting mode ); long press switch ( long press 3-10 seconds to close ) • Internal wiring applies the high efficient booster circuit, and can utilize the batteries in the largest extent • The wide angle mode is realized by moving the extended distance between the lens and the emitter large range and wider exposure. • Easily light up an entire room or focus in on objects up to 1000 feet away, 10 times brighter than old incandescent lights • Can survive a 10-foot drop or being waterproof submerged under water. • Suitable for use in rain, snow, or emergency situations. • Ergonomic • Charge by free sunlight and light in dark when people near around 10ft close • UV protect ABS body Function: • To increase the light intensity at darkness