[Display and Connection: Our 2-piece beans hand warmer set quickly connects and detaches with a side display for easy battery and heat setting checks. Compact stylish and includes two lanyards Instant Heat Lasting Warmth: Heats up in 3 seconds with four settings from 110°F to 140°F. Each hot hands hand warmers delivers 3-8 hours of warmth and weighs just 2.8 ounces Safe and Reliable: Our rechargeable hand warmers feature a Type-C port that supports both input and output allowing for fast phone charging. UL-certified to prevent overheating and short circuits ensuring safety Extended Warmth: Each hand warmer rechargeable contains a 5000mAh rechargeable battery Fully charging in 3.5 hours. that provides powerful heat output and the extended warmth "Practical Gift Idea: Ideal for camping golfing skiing and winter activities. A thoughtful choice for those with Raynauds arthritis or cold hands. Great gifts for men who will love our cozy and warm BeanieWarm Hand Warmers"]