Enjoy Sun-like Warmth: No more cold hands, the pocket hand warmer with double-sided heating, quickly heats up to 95? only 3 second. 3 Levels temperature - Low temp: 95-108?, Medium temp:108-118?, High temp:118-131?. It's offers both your hands full-scale warmth no matter at indoor or outdoor Hand Warmer with 4-8 hrs Working Time: You will get a 5200mAh rechargeable hand warmer offers you with up to 4-8 hours of warmth in cold winter, outpace your mates and keep your hands warm anywhere Comfort & Portable: No more traditional cold metal warmers feeling like holding a stone. With thousands of polished surface, more smooth and warm. The curvy body and pocket size design to fits your hands better. Great for handy carrying in anywhere while ourdoors - golf, fishing, hiking, camping, skiing Intelligent Protection: Smart temp control system equipped with an integrated temperature sensor will switch off automatically when the temperature exceeds 131°F(55°C). Built in multiple protection technologies to keep the hand warmers away from over-voltage and over-charging Real Comfort & Warm Gift: Smooth and warm surface, palm-size, curvy body and ergonomic design. It's just a easy to hold and comfortable hand warmer. With exquisite package box, this is a must have warm in winter