Eco-friendly SANFORD Schwarzwolf lighter - The practical and ecological Schwarzwolf lighter with a battery works on the principle of electric discharge instead of flame. Charging can be performed via the cigarette lighter's micro USB port by connecting it to a computer or other compatible power source with a DV output voltage of 5 V ± 0.5 V and an output current below 3000 mA. The lighter contains a 220 mAh lithium battery. Charging time for the lighter is 1-2 hours, and a full lighter will last for about a week or 100-200 sparks. Micro USB cable included. Packaged in a Schwarzwolf gift box.