The ToughTested power bank and hand warmer combo can be a handy and convenient accessory for outdoor cold weather activities. Its 3, 600mAh rechargeable battery capacity and USB A port let you fully charge your compatible device anywhere, anytime. With three hand warmer temperature settings, you have the option to select a comfortable level of warmth in various situations. | ToughTested 3600 mAh Power Bank & Hand Warmer