Rechargeable Neck Warmer,Portable Neck Heater,PI Heating And Built-in 4,000 mAh Power Bank

4,000mAh High Capacity Neck Warmer can provide continuous heating .Warmers have handy temperature controls button and 3 temperature levels to keep your neck warm in winters. Heater adopted high quality power battery, along with multiple protection technologies.Smaller and more portable than ordinary power banks, with enough capacity to provide more than two charges.3 thickened warmer blades around your neck, warming the temperature around you in seconds. Complies with Prop 65. 7.7" L x 6.3" W x 2" H