The GAIATOP 2-Piece Rechargeable Hand Warmer and Portable Heater Set combines functionality and comfort, making it an essential accessory for anyone who experiences cold hands during winter months or outdoor activities. Crafted from high-tech aviation-grade aluminum and ABS materials, this ergonomic design fits comfortably in your hand, ensuring a pleasant touch experience. Whether you are at the office, in the classroom, or enjoying outdoor sports like skiing, hunting, or hiking, this hand warmer provides a reliable source of warmth to enhance your comfort. With its compact dimensions of 3.14 x 1.8 x 0.7 inches and a lightweight design of just 0.15 pounds, the GAIATOP hand warmer is highly portable, making it easy to carry in your pocket or bag. The built-in rechargeable 4000mAh battery allows for up to 6 hours of warmth, depending on the selected heat level. Featuring three adjustable temperature settings, this device heats up within just 3 seconds, providing immediate relief from the cold. It also includes indicator lights to inform you of the remaining battery life and heating status, ensuring you stay prepared during your adventures. This versatile product makes for a thoughtful gift for friends and family alike, perfect for any occasion. - Ergonomic design for comfortable grip and easy handling - Compact and lightweight, ideal for travel and outdoor activities - 2-in-1 functionality with a rechargeable battery lasting up to 6 hours - Three adjustable heating levels for customized warmth - Quick heating capability within 3 seconds for instant relief