Sanyo Eneloop Rechargeable Neck Warmer Type II
The heating section employs a strap-shaped ‘sheet heater’ made of carbon and a special type of resin. To keep the temperature warm and safe, the heater uses PTC functionality (a self-regulating constant temperature heating element). This PTC function prevents overheating and ensures that the right temperature is maintained. The heater is thin, lightweight and has very flexible properties to snugly wrap around the neck.