Zippo Black HeatBank 3 Rechargeable Hand Warmer USB compatible. The convenient power bank feature also recharges your USB compatible device so you can stay connected while enjoying the outdoors. Specifications for Zippo Silver HeatBank 3 Rechargeable Hand Warmer: Manufacturer: Zippo Weight: 2.2 oz Width: 1.63 in Height: 3.36 in Depth/Thickness: 0.59 in Features of Zippo Silver HeatBank 3 Rechargeable Hand Warmer: Charges USB compatible devices including; mobile phone Mp3 players tablets cameras etc. Dual sided heat up to 113F/45C operating temperature with high and low settings for adjustable and comfortable warmth Battery and heat indicator lights Rechargeable 2600 mah Lithium polymer battery (included) for lasting reliable warmth - up to 3 hour run time Included Accessories: USB cord Package Contents: Zippo Silver HeatBank 3 Rechargeable Hand Warmer Zippo 40509: Silver HeatBank 3 Rechargeable Hand Warmer USB compatible Zippo 40510: Black HeatBank 3 Rechargeable Hand Warmer USB compatible Zippo 40510: Black HeatBank 3 Rechargeable Hand Warmer USB compatible