AI Smart Magnetic Double-Sided Heating Hand Warmers Rechargeable 2 Pack,10000mAh Electric Heater, Larger Warming Surface, 4 Heat Levels, Max 136°F

AI Smart Magnetic Double-Sided Heating Hand Warmers Rechargeable 2 Pack,10000mAh Electric Heater, Larger Warming Surface, 4 Heat Levels, Max 136° Features & details Smart Heating, Safe & Energy-Efficient: Real double-sided heating hand warmer is here! Unlike traditional designs that heat from only one side, OCOOPA's Exclusive Hall Sensor + AI Smart Temperature Control: Innovative Dual-Sided Heating Technology. Maximizing Heat Efficiency for Longer Battery Life and Enhanced Safety, warming from your palm to your fingertips Extended Heat, Larger Surface: With a larger 5000mAh x2 rechargeable battery capacity , up tp 9 hours of continuous heat and Heats 40% more area than normal hand warmers; This hand warmer doubles as a power bank, charging your phone over 3.5 times 3S Quick Heating: Upgraded with 4-level temperature adjustment; This electric hand warmer offering a wider temperature ranging from 38°C to 58°C(100-136°F), and equipped with a memory function to maximize your user experience Built to Last: Made with advanced materials and officially certified batteries for absolute safety and enhanced durability; This hand warmer features a USB-C charging port and typically fully charges in 3.5 hours (per unit) Easy to Use: Designed for a comfortable grip, our hand warmer features a velvety smooth surface and slim profile; Simply press one button to turn it on/off, click to switch heating levels, or double-click to check the battery level (Note : Doesn't support C-to-C charging or fast charging)