Working Principle:It is converted into electrical energy by the solar panel at the top, and the light during the day is converted into electrical energy by the solar panel and stored in the rechargeable battery. When it is dark at night (you can also block the solar panel with your hand, so you can enter the night mode) the solar panel can no longer be charged, the light will automatically turn on, and the light cup will start to rotate accordingly.This lamp is suitable for use in courtyards, lawns, balconies, etc. No wiring or additional power supply, no installation, directly placed on the lawn, or hung on a tree to automatically charge during the day and automatically light at night.Specification:Color: Red, BlackSolar Panel: Amorphous Silicon 2V 40mABattery: 1.2V 300mAh AAA Rechargeable BatteryNumber Of LED Lights: 1 X White High-Brightness LED LightProduct Size: 27 X 9cm/10.63 X 3.54"Gross Weight: 510gPacking Size: 13.5 X 13.5 X 31cm/5.31 X 5.31 X 12.2"Note:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3mm measuring deviation due to manual measurement.