Volt Men's Torso Heated Vest Liner-Black-XL

4 panel heating system Safe & Durable 3v Heating Technology Includes a powerful 7.4v 2200mAh rechargeable lithium battery & charger Built-in 4 level microprocessor controller to select desired heat output Provides over 150 degrees of soothing heat on high for 2 hours and up to 8 hours on the lowest setting