Black HeatBank 9s USB Rechargeable Hand Warmer - 40582 The HeatBank 9s rechargeable hand warmer keeps you warm from the office to the woods for up to nine hours. This HeatBank model features the Mossy Oak Break-Up Country pattern, multiple heat settings and a convenient power bank feature that recharges your USB-compatible device so you can stay connected while enjoying the great outdoors. Sleek, ergonomic design fits easily in hands and pockets; can also be worn with included adjustable neck lanyard Rechargeable 5,200 mAh lithium ion battery lasts up to nine hours; up to 120F / 50C operating temperature Dual-sided heat with six settings; battery and heat indicator lights 5V2A USB output/5V2A micro USB input with included charging cable; automatically charges device as soon as it's connected Reliable, reusable and waste-free alternative to disposable products HeatBank Specs: Height: 4.88" Width: 2.38" Depth: 0.95" Weight: 5.52 oz. Warranty: 1 year Note: This product does not use any fuel or burners.