Kozy Xcel 10,400mAh Rechargeable Hand Warmer Provides Comfortable,Soothing Warmth for Hours from its Powerful Lithium Batteries, Includes Bonus Warmer Pouch, USB Charger/Power Bank, and LED Flashlight Very Powerful - 10,400mAh Lithium Batteries for reliable, long-lasting warmth - rechargeable over 500 times; You are backed by our Full 1-Year Warranty Easily Adjustable - Switch between high & low settings with a simple control Comfortable - Unique cube design fits comfortably in your hand Consistent - Aluminum Casing provides consistent, soothing heat on all sides BONUS - Free Warmer Pouch designed to enhance warmth in extreme cold conditions