Fieldsheer Men's Trek Heated Vest- The Trek heated vest is a stylish and versatile design with multi-zone heating system to provide hours of comfort and heat, whether thrown over your favorite shirt or sweater, or used as a base layer under a jacket. 4-way stretch soft fleece construction Wind, Rain and Water repellent Moisture-wicking mesh liner Anti-static protection Anti-odor fabric Zippered front pockets Full zipper front closure Tri-zone heating - left and right chest,upper back Integrated waterproof touch control button Blootooth- enabled wireless control Mobile App compatible available on App Store or Google Play Store Machine washable Rechargeable Lithium-Ion battery (7.4V 2200mAh) Up to 10 hours of heat between charges (2+ hrs HI- 10 hrs low) Usb cable included Charge time 3-4 hours Style: MCWB74V02221