Unigear Hand Warmer 10000mAh Fast Charging Rechargeable, Electric Portable USB Pocket Warmer Powerbank with 21 heat levels from 35-55°C & digital screen for Raynauds, Outdoor, Hunting, Camping.

"Ultra-fast heating: It only takes 1 second for a 360-degree all-round heating. The capacity of the 10,000 mAh hand warmer power bank provides a battery life of up to 16 hours, allowing you to stay warm continuously for a whole day in cold weather. Precise temperature settings: The digital LED display of Unigear electric hand warmer shows the remaining battery operating time and allows up to 21 temperature settings (35-55℃/95-131℉). You can easily adjust the temperature of the rechargeable hand warmer to your preference. Worry-free use: The built-in temperature monitoring chip conducts constant real-time temperature monitoring. The frame of the USB hand warmer is made of flame-retardant V-0 material, Acrylonitrile Butadiene Styrene Copolymers (ABS), and Polycarbonate (PC), for worry-free use. 2-in-1 power bank hand warmer: Our electric pocket warmer has both charging and hand heating functions at the same time. The USB Type-A and Type-C ports on the top support 20W two-way fast charging, USB Type-A (output), Type C (both input and output). 365 days 100% customer satisfaction: if you have any questions, please contact Unigear customer service, we will reply within 24 hours."