60m Underwater Photography Video Fill-up Headlight Diving Flashlight with Battery Display Function Product advantages: 1. Aluminum alloy solid lamp holder, enhance heat dissipation. 2.Hard oxidation, seawater corrosion resistance, scratch resistance. 3. The switch has its own power display function to understand the power status in real time. Product parameter Lamp beads model: 1xL2 lamp beads Output brightness reaches 1000 lumens Material: aviation-grade aluminum alloy (hard oxidation, seawater corrosion resistance, scratch resistance) Lamp cup: smooth plating reflector cup Power supply: 1*18650 lithium battery(not included) Switch: middle button switch (with battery indicator) Voltage higher than 3.4V, green light Voltage 3.2-3.4V display yellow light Voltage 3.0-3.2V shows red light Voltage 2.8-3.0V red light flashes Shut down when the voltage is lower than 2.8V; Gear position: 3 gears (-50%-SOS) Waterproof: IPX8 (diving depth of 60 meters) Lamp size: length 88mm*width 72mm*37mm Instructions for use 1. Check the battery: make sure that the battery is charged and the flashlight is installed in the correct direction; 2. When the headlight is in use, choose according to the voltage and battery requirements of the flashlight. Don''''t use it indiscriminately to prevent burnout of the circuit board. Don''''t use batteries of different models and voltages at the same time; 3. In use, when the brightness of the headlight changes significantly, turn off the headlight to prevent over-discharge of the battery, and charge it in time; pay attention to the waterproof, moisture-proof, and drop-proof of the battery, and charge according to the charging speed of the charger , After the indicator light changes, take it out in time, don''''t overcharge; 4. If the battery is not used for a long time, the battery should be fully charged and taken out for storage. Normally, it should be charged and discharged again in about three months to avoid chemical corrosion; 5. Keep the