The USB connection of this product is only for charging and can be connected to a computer.Charge any charger with output voltage of DC5V and output current less than 3000MA, such as mobile phone charger.After being fully charged, it can maintain a sufficiently long charging time, and a cigarette can be lit up to 100-200 times on a single charge.Rechargeable lithium battery, rechargeable.Windproof lighter. It can be lit in any type of weather, the wind does not affect it at all, and the rain does not affect it.No flame, no gas, environmental protection and safety. Small and light. The perfect travel gadget.It has a stylish appearance, which will make you very attractive in groups.material: metalType: USB lighterColor as shownSize: 275.*17.11.5 mmPackage includes: 1notes:1. Do not touch the electrode of the lighter-it will cause a slight electric shock. Stay away from children.2. Do not expose the lighter to fire, and do not pierce the lighter. Do not expose to temperatures exceeding 122F (50C).3. Avoid contact between the lighter and water. Do not ignite damp or damp things.4. If in rare cases the lighter becomes very hot and you smell burnt inside, please do not use it again.5. Due to manual measurement, please allow a difference of 0.1-0.3cm, thank you.6. Due to the difference in light exposure or computer display, there is no guarantee that the photo is 100% consistent with the actual product, please understand.