HEATPAC HPU 33400 Personal Heater BRAND NEW in its original box Several units available Key Features Portable personal heating system Designed to provide continuous body warming in extreme cold environments. Charcoal-based heating technology Uses replaceable charcoal fuel elements to generate heat efficiently. Adjustable heat output Heat level can be regulated depending on needs (low to high output). Flexible heat distribution tubes Transfers warm air around the body via integrated tubes for even heat distribution. Battery-powered airflow system Operates with a single D-cell battery to drive an internal fan. Long operating time Up to approx. 6–20 hours depending on heat setting and fuel load. Lightweight and portable Approx. 1 kg total weight , suitable for field operations. Catalytic safety system Reduces carbon monoxide emissions during operation. Multi-purpose use Personal body warming Heating sleeping bags or mattresses Warming IV fluids in medical situations Military and rescue-grade equipment Originally developed for Norwegian military and emergency use . Typical Applications Emergency medical services (EMS) Search & rescue operations Military field use Cold weather expeditions