"The Mobile Warming Bluetooth enabled 12volt Summit Duck Down Heated Vest is designed for the active lifestyle. It has classic down vest look, performance features and is constructed of a light-weight 100% Nylon Outer Shell with ultra-warm Duck Down core. Designed for hikers, climbers, or anyone who spends long periods in cold weather, the Summit Vest has 500-fill 85/10 duck down core that allows for free movement during even the most rigorous outdoor activity. The Summit features plenty of pockets for storage and includes a stow bag to keep your vest packed away and ready for when you need it. The Summit Vest is heated with our Far-Infrared heating system to keep you warm in those cold conditions. The Summit is powered by our all new 12volt lithium-ion battery, includes a USB port to charge your mobile devices and a powerful built-in LED flashlight. Like all our 12volt systems the Summit has large heating elements, two on the back and two on the chest. The chest heat zones run all the way down to the zippered hand pockets for added warmth. The Summit's Far-Infrared Heating System can provide heating temperatures ranging from 135°F on high to 90°F on low. On high, expect up to three hours of heat, and on low, the Summit can heat up to 11 hours! The Summit Vest has two ways to adjust the temperature. First, the built-in touch control button. With a simple button push, you can select from four heat settings. Second, we've incorporated Bluetooth control with our MW Connect app. Through the MW Connect app, you can quickly toggle through all connected Mobile Warming devices and adjust individual heat levels to your liking. MW Connect allows you to get real-time updates on battery levels and update your garments when new firmware becomes available. The Summit comes as a complete package with a battery, charger, and stow bag. The Summit Heated Vest provides instant heat when the weather turns cold, keeping you outdoors and enjoying your favorite activity. Features: Lightweight 100% Nylon Outer Shell with Water Resistant Fabric 500 Fill Duck Down Core 100% Polyester Inner Liner with Anti-Static Zippered Hand-Warmer Pockets Zippered Interior Chest Pocket Hook & Loop Interior Pocket Waist Drawstring Cinch Closure Stow-Away Carry Bag Multi-Zone Heat Elements, 2x Chest, & 2x Back Bluetooth Enabled Wireless Control MW Connect Mobile App Compatible Integrated Touch Control Button 4 Selectable Heat Settings 12volt Rechargeable Lithium-Ion Battery Up to 11 Hours of Power Per Charge Charge Time: 4-5 Hours Color: Mossy Oak Country Available in S, M, L, XL, XXL & 3XL Includes: (1) Summit Vest (1) Stow-Away Bag (1) 12volt 5200mAh Lithium-Ion Battery (1) AC Charger " Mobile Warming 12V Men's Summit Heated Vest - Mossy Oak Country