The Mobile Warming Men's Peak BT Vest is perfect for anyone looking to add warmth to their outdoors activities. The Peak BT Vest is features 4-way stretch soft shell construction, Wind-Shark Protection means this vest is Windproof and water resistant. Also includes a moisture wicking mesh liner and anti-static protection.Features:Multi-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 Hours