No butane, propane, or kerosene required. Just charge via micro-USB and push the button for high-temp "flame." UST Brands has developed this windproof, fuelproof lighter to bing us into the modern world. Designed to be used with their proprietary ParaTinder, but may also be used on mediums from dry grass, paper, etc.
• Built-in, rechargeable lithium-ion battery
• Indicator light flashes red while charging and is solid red when fully charged
• 10 second time-out safety feature
• To ignite ParaTinder, expose red core thread and light with the TekFire
• Use inner paracord strands for sewing thread, sutures, fishing line, and more