Safest, most efficient, most controllable portable gas cooker yet. Redesigned pan support lifts the cooking pan for improved even heating. A new burner gives more control without power loss. The new BS100S Table Top Cooker is suitable for pots, pans up to 18 cm base size. It has a redesigned pressure switch and insulation meeting all international standards for fail-safe cartridge safety. Specifications: Tested for use inside and outdoors, Unique features for safe use indoors or out, Sensors cut gas flow if flame blows or goes out, Red button gas safety trip prevents unsafe pressure build-up, Placement protection; cartridge must be aligned correctly to activate keyway, Only use gas appliances in well ventilated areas, Double-ring vortex burner for balanced fuel/air mix for steady heat, Flame-protection collar for consistent heat, even in windy weather, Piezo ignition, Each A4 Butane Battery® gas cartridge lasts 90 minutes on high and up to 4 hours on simmer. Weight - 2.6 kg, dimensions - 34.5 x 28 x 9 cm and portable with its own rugged carry case. Best to use Bright Spark A4 Butane Battery (BS0136 or BS3656), not included. Cartridge can be safely removed even if not empty. 5 year warranty.