... -circuit, automatic power-off on the socket , 100,000 hours LED’s Lifetime.2. Reliability: Bulletproof glass lens, optimized structure design ... working time more than 4500 lux for lighting degree, battery usage lifetime 1000 cycles, display cap lamp number,time, battery capacity by ... need to change the bulb as the long lifetime of LED, which makes the product more compatible in price. 4.5Ah ...