● Built-in Lithium iron phosphate battery of 2000times cycle life. ● High-brightness SMD3030 chips adopted, efficiency improved by 20% compared with traditional SMD5730 and SMD2835 chips; LED lifespan up to 100,000 hours. ● Detachable housing design, convenient for battery replacement and maintenance. ● Power indicator function makes charging/discharging status clear at a glance. The indicator flashes when in charging status, and battery capacity can be displayed when in discharging. ● IP66 waterproof, no more water ingress. ● 3 years warranty for the whole lamp.