Product features 1. Built-in charge free maintenance, capacity up to 600mah, lead acid battery. 2. Ultra-long life battery, over 250 cycles of charging and discharging. 3. Ultra-high brightness can concentrate the long life LED lighting, which has low power consumption and long lighting time. 4. Select special reflective cup, which has a longer range than ordinary flashlight, with more concentrated light and stronger brightness. 1. Fully push out the ac plug with both feet when charging, and directly plug it into the ac110-220v /50HZ power socket (corresponding charging indicator will be on). The sufficient power needs about 10 hours (it is recommended to charge during the day). 2. Push the key forward when using, and the four lights at the front are on. Stop lighting will push the key backward. 3. Sufficient electricity, 4 lights can be used for 10 hours continuously. Quality assurance our products comply with company standards: Q/XYSD 002-2009. The warranty period is 3 months from the date of purchase. 1. In order to guarantee service life, please charge the product normally once before use. 2. If the light is dim, please recharge in time. 3. Do not use the switch when charging. Please put the switch in the closed state to avoid burning the power supply and internal components. 4. Please keep away from inflammable and explosive goods while charging, and the maximum charging time shall not exceed 12 hours.