1. Rechargeable Hand Warmer: Compact and portable hand warmer designed for convenience, easily held in one hand and fits in a pocket or travel bag. Ideal for outdoor activities such as travel, work, hunting, sports, fishing, hiking, skiing, camping, and biking. 2. Light Function: This heated hand warmer provides warmth during cold weather and features a built-in light for use in low-light conditions. 3. Safety Features: Equipped with an optimized circuit to protect against over-discharge, over-charging, overheating, and short circuits, helping extend the product's lifespan. 4. 2-in-1 Multi-Function: Built-in 4000mAh battery with USB interface allows the device to function as both a hand warmer and a power bank. 5. Ideal Winter Gift: A practical and thoughtful gift for winter, especially beneficial for individuals sensitive to cold temperatures. Suitable for Thanksgiving, Christmas, New Years, birthdays, and anniversaries, making a great present for loved ones, kids, family members, and outdoor enthusiasts. Product Name: Hand Warmer Rated Power: 6W Input Voltage: 5V Charging Time: Approximately 3 hours Battery Capacity: 4000mAh Material: ABS + Aluminum Alloy Color: Pink Package Contents: 1 x Hand Warmer 1 x USB Charging Cable Note: The package includes only the items listed above. Other accessories are not included. Due to lighting reflections and display differences, the item color may vary slightly from the images shown. Measurement may vary by 1-3 cm.