The Tegstove, as featured on Dragon's Den, is a unique camping stove that uses an ingenious design to extract maximum performance from widely available & inexpensive butane gas cartridges & will also charge most portable electronic devices as well! The stove uses a heat transfer module that gently warms the butane gas cartridge to maintain consistent pressure even when the temperature drops & a safety cut off valve prevents over pressure situations. In addition the burner incorporates a thermoelectric generator (TEG) to top up the built in Li-ion battery or you can charge your gadgets directly through the 5V/1amp USB (Universal Serial Bus) output socket. Other features include a built-in piezo ignitor for convenience, an adjustable size pan support & also adjustable legs maintain a stable platform on uneven surfaces. This stove is ideal for family/car camping, picnics, outdoor sports & even as an emergency stove for home use. Please note that the pan, the iPhone & the cable shown in the images are not included.