1. Long press the switch button (2S) to turn on/off, short press to adjust the light mode (red light/green light/white light flashes quickly, slowly, and cycles in constant light mode) 2. With stickers and straps, it can be pasted and installed, and can also be used with straps 3. Battery capacity: 3.7V 90mAh 4. Charging time: about 1h 5. Charging input: 5V 1A 6. Charging port: Micro USB 7. Packing list: warning light x1, charging cable x1, sticker x4, strap x2 8. Size: about 27.2x39x13mm 9. Weight: about 6.5 grams
