MOBILE WARMING MEN'S BK CNTRY HEATED VEST BLACK LARGE FEATURES: Lightweight 100% Nylon Outer Shell 100% Primaloft® Synthetic Down Polyester-Filled Core 100% Polyester Inner Liner with Zapsheer™Zapsheer™ Anti-Static Technology 2 Waist Zipper-Close Hand Pockets Internal Storage Pocket Stow-Away Carry Bag Multi-Zone Heat Zones: Left & Right Chest, Upper Back Bluetooth®-Enabled Wireless Control MW Connect™ Mobile App Compatible available on App Store® or Google Play Store® Integrated waterproof Touch Control Button 4 Selectable Instant Heat Settings Battery Features: Powersheer™ Rechargeable Lithium-Ion Battery (7.4V) Up to 10 Hours of Power Per Charge UL/CE certified USB Cable included Charge Time 3-4 hours* * Footnote: Charge time is based off using a USB-A wall charger that delivers 5V@2.1A