Features:
* Charges USB compatible devices including; mobile phones, Mp3 players, tablets, cameras, etc.
* Dual sided heat up to 120°F / 50°C operating temperature with six (6) heat settings for adjustable and comfortable warmth
* Battery and heat indicator lights
* Rechargeable 5200 mah lithium-ion battery (included) for lasting reliable warmth - up to 9 hour run time
* Reusable, less waste versus disposable warmers
* Perfect for staying warm inside offices or extended outdoor activities
* Quickly shows the selected heat setting & battery charge remaining
* Plenty of heat to keep your hands warm in cold weather
* Lets you adjust the heat to your environment

Specs:
* Height: 4.88 in
* Width: 2.38 in
* Depth: 0.95 in
* Weight: 5.52 oz / 156.4 g

* Note: This product does not use any fuel or burners