Fieldsheer Peak BT Vest Unisex Black Size Medium New NWT with battery 4-Way Stretch Soft Shell Construction Wind-Shark circledR; Protection from Wind, Rain, Water Sweatsheer? Moisture-Wicking Mesh Liner Zapsheer? Anti-Static Protection Multi-Zone Heat Zones, 2x Chest 1x Back Bluetooth circledR;-Enabled Wireless Control MW Connect? Mobile App Compatible available on App Store circledR; or Google Play Store circledR; Integrated Waterproof Touch Control Button 4 Selectable Heat Settings Battery Features: Powersheer? Mini Rechargeable Lithium-Ion Battery (7.4V 2250mAh) 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 Includes: (1) Peak BT Heated Vest (1) Powersheer? Rechargeable Lithium-Ion Battery (1) Micro USB cable Replacement batteries: Battery SKU: MW74V023 - 7.4v Powersheer? Mini Rechargeable Battery (7.4v 2250mAh) Battery SKU: MW74V040 - 7.4v Powersheer? XL Plus Rechargeable Battery (7.4v 4000mAh)