Product parameters: Material: ABS+PC Model: P168 Colors: White, Black Input: 5V/0.1A Battery capacity: 60MAH The indicator light shows: Low battery: red light flashes quickly Charging: red Full: light off Wiring: Usb to Type-C 30cm charging cable Filter wavelength: cutoff below 600hm Sensing wavelength: 760-1 100nm Standard number: Q/SMD 001-2021 Made in China Made in China Instructions for use: Switch Changan on and off, press briefly to cycle between the first gear (red light is always on), the second gear (red light flashes), and the third gear SOS mode Put your eyes close to the red light filter and scan the environment through the window. If there is a camera, red dots will appear as bright reflections. Precautions 1. Do not look at the red light for a long time 2. Keep away from fire sources or places with high temperatures and keep dry. 3. Please keep the product out of the reach of children