Equipped with Bluetooth button. Under pants with dual power heating system allows you to use the pants with different types of power supply: Possibility to adjust the button and to view the battery life on the button or via the App directly on the smartphone. Equipped with connecting wiring for socks on the calf. Heat the entire front and side of the leg, the part around the knee and the lumbar fascia. equipped with two comfortable external pockets and an internal batter pocket. Product information. Colors: Black. Comfort: Electrically heated. Functionality: Bluetooth connectivity. Materials: Fabric. Suitable for: Men, Universal, Women. Technology: Electric Power Guide. Climate type: Cold. Heating over the entire pants. Bluetooth control (app). 4 heating levels. Battery level indicator. Elasticated cuffs. Heated with 7.4V or 12V battery.