Fast, even warmth on both sides: Heats up in seconds and delivers consistent heat across both surfaces so your hands warm quickly and comfortably. Heating time varies by temperature setting. Longlasting heat: Provides 3–8 hours of continuous heating depending on the chosen heat level, giving reliable thermal protection through commutes, outdoor activities, and coldweather tasks. Dual function — heat and power: Builtin 10000mAh battery warms your hands and doubles as a power bank to recharge phones and other USB devices when you need extra battery life outdoors or on the go. Compact, pocketready design: Slim profile fits easily in a pocket or glove compartment. The nonslip silicone and aluminum construction gives a secure, comfortable grip without adding bulk. Durable, outdoorready materials: Sturdy aluminum body with silicone accents resists wear and delivers a comfortable touch. Designed for repeated use in cold conditions for dependable performance. Practical controls and safety: Multiple temperature settings let you balance warmth and battery life. Thoughtful construction prioritizes steady heat output and reliable operation. Key specifications and attributes: Battery capacity: 10000mAh (power bank capability) Heating: Rapid heat in seconds; even heating on both sides Runtime: Approximately 3–8 hours continuous, depending on temperature setting Materials: Aluminum housing with silicone for grip and insulation Size/portability: Pocketable, lightweight design with nonslip surface Typical use scenarios: Outdoor sports and trips: Keep hands warm during skiing, hiking, camping, or winter sports while maintaining a portable power source for navigation or cameras. Fishing, golfing, and other outdoor hobbies: Warm your hands during earlymorning or lateday outings without interrupting your activity. Daily coldweather needs: Use on commutes, waiting at bus stops, dog walks, or while working outdoors; recharge your phone if battery level becomes critical. Why customers choose this device: Solves cold hands quickly and reliably while also preventing device battery anxiety thanks to the 10000mAh power bank. Built to be carried and used anywhere — durable materials, nonslip grip, and compact size make it practical for daily use and outdoor adventures. Adjustable heat settings and multihour runtime let you control comfort and performance based on conditions and activity.