The Mobile Warming Bluetooth enabled 7.4-volt Men’s Alpine 2.0 Jacket is one of our original designs that’s been perfected over the years. The Alpine is ready for some of the harshest conditions—rain, wind, cold—all the above. Stay dry with our windproof and water-resistant Windshark fabric technology. 3 Heat zones with 4 temperature adjustments are powered by our slim 7.4V rechargeable Lithium-Ion battery, allowing you to customize temperature for any condition. Through the free MW Connect app, you can quickly adjust individual heat levels to your liking. MW Connect app allows you to get real-time updates on battery levels. The Alpine BT Heated Jacket is ready for any weather.