The Fieldsheer® Bluetooth®-enabled 7.4V shift heated jacket is a stylish button-up fleece heated hoodie that can be worn in almost all situations. The shift heated hoodie heated jacket is made from a blend of 65% cotton fleece with a soft texture and high insulative properties. It has stylish looks for around town or up in the mountains. Through the free MW Connect™ app, you can quickly toggle through all connected Fieldsheer® powered by Mobile Warming® technology garments and adjust individual heat levels to your liking. MW Connect™ app allows you to get real-time updates on battery levels and update your garments when new firmware becomes available. From the trail to the office, the shift heated jacket keeps you warm on or off the beaten path. The 7.4V system has 3 heating elements, one on the back and 2 on the chest, that add heat to critical areas that keep your core warm. The Shift 7.4V heating system can provide temperatures ranging from 135 Deg F on high to 90 Deg F on low. On high, expect up to 2 Hrs of heat. On low, the Shift Heated Jacket can provide heat for up to 10 Hrs! The shift heated jacket has 2 ways to adjust the temperature. First, the built-in waterproof touch control button. With a simple button push, it lets you choose from 4 instant heat settings with multi-colored LED indicator. Battery features Powersheer™ 7.4V rechargeable lithium-ion battery (7.4V 2200mAh), up to 10 Hrs of power per charge, UL/CE certified, USB cable included, charge time 3-4 Hrs*.