◆ 2 charging methods: In direct sunlight, you can charge the bulb with the connected solar panel. The charging time is usually 5 to 8 hours. When it rains, you can charge the bulb with the power bank. ◆ Durable: Built-in 3.7V 1200mAh lithium-ion battery, can be used for 6 hours after fully charged. ◆ Waterproof design: Both the bulb and the solar panel are IP65 waterproof and can be used in all weather. ◆ Energy-saving bulb: Built-in 13 LED chips, 0.7W output power, 120 lumens, 13000-15000K color temperature, long service life and low energy consumption. ◆ Hook: With a cable and a metal hook, it can be easily hung on the wall or tent.