<b>Feature:<b><br/>Color: Black<br/>Material: ABS+Zinc alloy<br/>Size: 4.13*2.8*1.5in (105*71*37mm)<br/>Weight: 1.83oz (52g)<br/>Ignition Method: Tungsten Ignition<br/><br/><b>Precautions:<b><br/>1. Please disconnect the power supply in time after charging (generally 2 hours for full charging). Do not connect the fully charged battery to the power supply for a long time. Overcharging will shorten the battery life.<br/>2. When the battery is about to run out, the duration of the tungsten spark will be shortened. At this time, please charge it in time. Before the battery is fully discharged, it will extend the service life of the battery.<br/>3. Do not keep igniting for a long time, and it is recommended not to exceed 10 seconds each time to extend the service life of the product.<br/>4. Since the battery uses the principle of chemical reaction, if it is not used for a long time, it is recommended to charge it every six months to prevent the battery from over-discharging and affecting its service life.<br/>５. The red indicator light is on when charging, and the indicator light is automatically turned off when fully charged.