describe:1. Charcoal fire hand warmer, hand warmer, charcoal fire fluorescent. Fashionable style, three-level speed adjustment, five-second heating. The first gear: 40, the second gear: 50, the third gear: 60.2. This electric hand warmer is not only a rechargeable hand warmer that provides you with warmth, but also a good companion for winter outdoor sports. It can also be used as a backup battery power pack and to quickly charge USB devices.3. 3 Temperature modes are adjustable and heat is released immediately within a few seconds of pressing the switch. You can choose the right height to enjoy the warmth.4. High-quality materials The portable charging hand warmer is made of high-quality ABS material, which is smooth and warm, light and compact, and non-slip with one hand. It's shockproof, anti-scald, explosion-proof, lightweight, durable and easy to carry anywhere you like.5. Reusable long-lasting hand warmer, temperature range 45-60; you decide the degree of warmth. Perfect for winter hikes or chilly morning commutes.Specification:Product name: Charcoal fire fluorescent hand warmerInput: 5V 2A MaxProduct material: ABS+aluminum alloyWorking time: 2.5-12.5h (depending on different gears/usage scenarios)Color: white + charcoal atmosphereBattery cell: lithium-ion batteryCharging time: 5+1hPackage includes:1 x Charcoal Fire Fluorescent Hand Warmer