Solar light bulb works like any household light bulb, when power is cut the LED rechargeable solar light bulb operates as an emergency lamp and switches on automatically as long as room light switch is set to ON, You will never be without light due to a blackout ever. 

Features:

• Solar Power Light Bulbs with built-in 3pcs inner solar panels, 16pcs high lumens LED beads and a 1200mAh lithium battery
• Rechargeable, energy saving 80%, carry with ease, waterproof IP44. Ideal for home, reading, camping, outdoor trips, emergency events
• The Solar Power Light Bulbs are regular size and switches on automatically as long as room light switch is set to ON after power outage, You will never be without light due to a blackout ever
• Charging 9hrs in sunlight will give you ≥2hrs of lighting, charging 5-6hrs by home electricity will give you ≥5hrs of lighting

Specification:

• Size: Standard A21 shape with E27 base
• Battery: 18650 Li-ion battery / 1200mAh / included
• Color Temperature: 6500K
• Life Span: 2-3 years
• Bead amount: 16pcs
• Output Power: 7W
• Main Material: PC