Meet the ThermoCharge Duo, a versatile and innovative hand warmer that doubles as a power bank. This sleek device is designed to keep your hands warm and your devices charged during the coldest months, ensuring you stay connected and cozy. Equipped with a smart temperature display, you can monitor the exact warmth level, ensuring personalized comfort with the touch of a button. The 5000mAh battery provides not only long-lasting warmth but also the power to charge your smartphone or other USB devices when you need it most. Enhance your brand with a custom logo printed on the device, making it an excellent promotional item or a personalized gift. Made from abs+aluminum alloy material, measuring 4.02*1.97*1.02inches, this custom hand warmer and power bank – 5000 mah. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: Compact size, lightweight, easy to carry.