1. The outdoor solar bulb has a diameter of 6.5 millimeters and is made of ABS and PC.2. Equipped with metal portable hooks, suitable for outdoor, home use, mountaineering or camping.3. The solar panel can be connected to an outdoor cable and plugged into the bulb charging port. When there is sunlight, it can automatically charge. It can also be charged through various methods, such as computers or mobile power sources. After being fully charged, the lighting can last for 4 hours.4.When the light bulb is charging, the charging indicator light is red. After being fully charged, the indicator light will not change color. After charging, it can be used separately. The humanized design of the light bulb can be manually opened and closed, with a portable hook for easy carrying and use.5. The battery is equipped with built-in overcharging and discharging protection circuits. After being fully charged, the circuit automatically shuts down and stops charging; When the discharge continues until the voltage drops to 2.8V, the protection circuit automatically closes and stops lighting to protect the battery.