Personal Heater (user operated on/off switch)-
This heater can be used with an optional battery pack or plugged into a cigarette style receptacle. It is safe enough to be put inside a jacket and held in your hand while in use. 

2 fans, 2 heating modules
1 thermostat or on/off  toggle switch
2" x 2.5" x 9.25" housing
12v DC 
200 Watts
10' cigarette adapter cord