Designed with the avid outdoor person in mind, Fieldsheer’s Smart Thawdaddy 2.0 Bluetooth Heated Vest delivers unparalleled performance with advanced features, including a compact design and a powerful heating system. Powered by Powersheer, the 7.4-Volt Lithium-Ion battery holds up to ten hours of power per charge delivering comfort no matter what nature throws at you and with a universal USB charging port. Our proprietary MW Connect app provides robust connectivity, and you can control your settings seamlessly, ensuring you stay warm and keep going longer. Perfect as a mid-layer, the Thawdaddy vest is an ideal addition as a layering option for evolving winter conditions. The front zipper design 100% polyester shell provides protection from the elements while the Sweatsheer technology wicks moisture away from the skin, keeping you warm and dry for hours on end. 4 different heat settings allow you to maintain a comfortable core temperature, while the compact design makes this the perfect solution for keeping in a car, truck, motorcycle, or boat.Vest Features:100% Polyester Outer ShellSweatsheer Moisture Wicking MeshCompact Vest Design4 Selectable Heat Settings7.4volt Rechargeable Lithium-Ion BatteryUp to 10 Hours of Power Per ChargeUniversal USB Charging Input