Rechargeable Hand Warmer, 10000mAh Portable Double Sided Electric Hand Warmer, Power Bank About this item 3S Double-Side Quick HeatingThe rechargeable hand warmer is made of high-tech aircraft-grade aluminum and thousands of polished exterior materials, so it can quick heating in 3 seconds. There is 3 setting modes 104F (low)/122F (medium)/140F (high) free to choose to warm your hands for 8-12 hours continuously. Double-side heating design, warm you all winter. Multifunctional Hand Warmers RechargeableQuick hand warmer & Power bank and Flashlight 3-in-1. It's not only a little hand warmer but also a emergency backup battery. which can convenient charge cell phones or tablets, compatible with both android phones and iPhone, more convenience than others. Large Capacity Hand Warmer RechargeableThe reusable 10000mAh capacity electric hand warmers. The portable hand warmer LED screen display 3 level heating for you to choose , by a simple power button, easy to use. 3 battery indicators to check power. Safe & EnvironmentalSafety is our priority, The optimized circuit extends the Life-time of our USB hand warmer and provide protection against over discharging, over charging, overheat, and short circuit. Its Shockproof, Anti-scald, Anti-skid, Explosion-proof, Radiation-free, Green and Healthy heat transfer. Perfect Gift in WinterThe hand warmer with perfect gift packaging, including rechargeable hand warmer, micro USB cable, lanyard, user manual and excellent after-sales service. Hand warmer can be carried with you when sports, fishing, hiking, camping, skiing, traveling or outdoor sports. Best gift for family and friends for Christmas, Birthday, Thanksgiving, Valentine's Day.