Products with multi-color default mixed color packaging can support customized LOGO ? Product description: ????? This product is completely different from other LED flashlights in the power supply mode. Other LED flashlights use ordinary dry batteries for power supply, while this product uses manual automatic power generation, and the lower half of the flashlight has a hand-held handle, you only need to press the handle continuously, and the LED can automatically shine. This product is especially suitable for these two demands that are often used or occasionally used. The former can save a lot of silver, while the latter can save the trouble of preparing electricity. ? Working Principle:? Cutting magnetic lines of flux generates electric energy, and the LED light-emitting device emits bright light. ? ? 1. Hand-held torch (no battery required); 2. The product is small, with lanyard, easy to carry. Specifications: 10 × 5 × 2.5 cm4, with three LED bulbs as light source, long life, high brightness, torch light is white light; 3. Built-in micro power generation device, only need to hold a few times in one hand, using the principle of friction power-up, can automatically generate electricity, and the generated electricity will be automatically charged to backup battery; 4. How to use: turn on the switch behind the hand grip, the hand grip will pop up automatically, use one hand to easily hold it back and hold it for a period of time (the electricity sent will be automatically charged to backup battery miles), then put the hand grip away, turn on the always-on switch and you can use it. 5. Once owned, this product is used for a long time, and has the characteristics of stylish and unique shape, good hand feeling and fitness. The grip is bright, saving countless money. Car emergency, student dormitory and camping use. No longer afraid of spending money on batteries, there will be electricity in hand.