Product features: 1. Built-in charge free of maintenance, capacity up to 3500mah, lead acid battery. 2. Ultra-long life battery, over 250 cycles of charging and discharging. 3. Stable constant current and constant pressure switch power charger is adopted, with more stable performance and higher safety coefficient. 4. Adopt aluminum reflective cup, with better heat dissipation and spotlight effect, no deterioration or scratches, and brighter brightness. 5. Ultra-high brightness can concentrate light environmental protection type long life 8W LED light, low power consumption and long lighting time. 6. This product is elaborately designed with flashing warning function, applicable to construction site, accident prone area, night or foggy day, etc. 1. To ensure service life, please charge the battery normally once before use. 2. If the light is dim, please recharge in time. 3. Do not directly shoot the eyes, so as not to affect the vision (children should be used under the guidance of adults). 4. Do not use the switch when charging. Please put the switch in the closed state to avoid burning the power supply and internal components. 5. Please keep away from inflammable and explosive goods when charging, and the maximum charging time shall not exceed 15 hours. 1. When charging, open the back cover of the product, pull out the ac power cord and plug it directly into the ac 110-220v /50HZ power socket (corresponding charging indicator light will be on). When fully charged, the indicator light changes from red light to green light. It takes about 12 hours to be fully charged (daytime charging is recommended). 2. When using, press down and turn on the key ON1, the first level of weak light illumination, the second level of strong light illumination, the third alarm function, the fourth level of lights off, and so on. At the same time, press on the key ON2, the first step 8 LED lights lighting, the second step stop lighting, the third step 8 LED lights warning function, the fourth step stop lighting, and so on. 3. ON1 function: the weak light illumination of the searchlight can be used for 30 hours continuously, the strong light can be used for 8 hours continuously, and the warning function can be used for 60 hours continuously; ON2 function: 8LED can be used for 30 hours continuously, and alarm function can be used for 60 hours continuously. Searchlight should be charged frequently, do not use for a long time. If not used regularly, please recharge for more than 10 hours every three months, otherwise the battery life will be reduced. Quality assurance our products comply with corporate standards: Q/AYSD 002-2011. The warranty period is 3 months from the date of purchase. (products damaged or burnt due to abnormal use are not included in the warranty.)