DUAL SOURCE 12V or 7V Traditional 12v heated clothing is great but only works when plugged in to a 12v power system. Once you unplug to get off your bike, you lose the ability to keep your clothing heated. Volt’s new Fusion Heated Pants can be used on or off the bike. Everybody loves the unlimited power of traditional 12v heated clothing. Everybody also loves the portability of 7v battery heated clothing using small, lightweight rechargeable batteries. Volt's new patent pending Fusion Heating System brings everything you love about these two different heating systems together.  CHARGE THE PORTABLE BATTERY ON THE BIKE And when on the bike, the vest battery can be charged while you are powering the Fusion Pants through the 12v electrical system of your bike. When you stop to get off your bike, simply disconnect from the bike’s power and the rechargeable battery can take over to keep heating the Fusion Pants. When you get back on the bike, you can continue use the 7v battery for power or connect to the 12v electrical system and the battery in the pants can be charged and your bike's power will take over heating the pants.  The 7v battery and mating 7v plug is stored in a small zippered pocket on the left hand side. The male 12v coax plug for connecting to the battery harness installed on your bike is stored in a pocket flap located at the waist that is designed to fold over on top of your outer riding pants when using your Fusion Pants as a liner. This allows access to the controller switch and 12v coax plug.  BLUETOOTH THERM CONTROLLER SWITCH The Fusion Pants includes a built-in Therm Controller Switch with Bluetooth capability. Either use the simple push button control switch manually to change power level settings or download the Volt Heated Clothing App and control your heat output remotely. This is a great feature for when wearing the vest as a mid-layer under your outer riding jacket wear you can change the power level setting without having to disrobe or fish around for the controller switch. Approximate Battery Run Time per Power Level (the battery will fully charge from bike in 1 - 2 hours.) High – 1  hours Med – 2 hours Low – 3 hours FUSION 12v/7v Dual Source Heated Pants with Bluetooth Therm Controller Switch