-With a lifespan of 2500 hours, these LED Energy saving lights are the perfect way to save on electricity costs and minimize the need to replace your light bulbs often. -This energy saving light bulbs work like regular bulbs when the power supply is available, during which time they also recharge while the switch is on. -Once the power cuts, they stay on, using the rechargeable battery in the bulb itself. Please note: When using this light during load-shedding, it first needs at least 4 hours of charging time. The battery inside the light only charges when the switch is turned on. Do not turn the light switch off or unplug anything during load-shedding. Features: -Large bulbs 80% more energy saving over standard incandescent bulbs Lasts 8 times longer 5 times the brightness of a standard incandescent bulb -No need to change bulbs frequently. -Dustproof, waterproof and fast heat dissipation Long life span – 20w E27 Super Bright Smart Rechargeable Emergency LED bulb Pack Of 5 Specifications: -Colour: Cool White -Material: Plastic and Aluminum -Operating range: 170 – 250V -Charging time: 4-8 hours -Operating time: 2-4 hours -Beam angle: 230 degrees Dimensions (approximately): 20W: 6 x 12 cm -Colour temperature: E27: Up to 3000K -Socket application: E27: Screw cap