1、Quick Heating: This rechargeable hand warmer provides quick heating in 5 seconds, persistent heating to constant temperature. 2、Temperature Control: This rechargeable hand warmer adopts intelligent temperature control and 2 modes adjustment for high safety. 3、Portable Charger: This rechargeable hand warmer with LED display can also be used as a 8W portable charger, providing more convenience. 4、10000mAh Battery: This rechargeable hand warmer adopts 10000mAh battery which ensures long battery life. 5、Maximum 55℃: The maximum temperature of this rechargeable hand warmer can up to 55℃, automatic shutoff when overheating. 1 x Hand Warmers Rechargeable1 x USB Charging Cable1 x User Manual Item Type: Hand Warmers RechargeableMaterial: ABS and SiliconeVoltage: 5VCurrent: 2APower: 10WTemperature: 45 ℃ / 55 ℃Battery: Lithium Polymer Battery 10000mAh (Battery Included)Charging Time: 3HScreen Display: LED Digital Tube DisplayWeight: Approx. 409g / 14.43oz