The Simple Solution for Reliable Warmth Peak Bluetooth Vest.Features:4-Way Stretch Soft Shell ConstructionWind-Shark Protection from Wind & Water ResistantMoisture Wicking Mesh LinerAnti-Static ProtectionMulti-Zone Heat Elements, 2x Chest & 1x BackBluetooth Enabled Wireless ControlMW Connect Mobile App CompatibleIntegrated Touch Control Button4 Selectable Heat Settings7.4volt Rechargeable Lithium-Ion BatteryUp to 10 Hours of Power Per ChargeCharge Time 3-4 HoursAvailable in SM, MD, LG, XL, 2XL & 3XLIncludes:(1) Peak BT Heated Vest(1) 7.4volt 2000mAh Lithium-Ion Battery(1) AC Dual Charger Mobile Warming 7.4V Men's Peak Bluetooth Lightweight Heated Vest - Previous Generation (3XL)