the Rechargeable Hand Warmer Hot Pack & Power Bank is a Versatile & Practical Device Designed to Keep You Warm in Chilly Weather While Also Serving as a Portable Power Bank for Your Electronic Devices. with a Rapid Three-second Heating Function & Three Levels of Temperature Adjustment, It Provides Customizable Warmth with a Skin-friendly Feel. the Added Fast-charging Feature Ensures Your Devices Stay Powered Up on the Go. Compact in Size & Equipped with a 2400mah Capacity, This Dual-purpose Gadget is Perfect for Trade Shows or Conferences, Where It Can be Easily Customized with Your Brand Logo for an Impactful Promotional Giveaway