KEROLFFU Rechargeable Hand Warmer 5200mAH Electronic Portable Heating USB Backup Power Back Battery for Samsung iPhone;

ELECTRIC HAND WARMER RECHARGABLE ( Warming up to 4-8hours, 3-Heats modes to130℉)

Looking for a Rechargeable Portable Hand warmer That also charges your Smartphone and other USB digital Devices? NOTE: Dont't expose it directly to cold air or in water, Just put the warmer in pocket or given little bad.
Battery Capacity:5200mAh
Input:5V/2A,Output:5V/2A
Product Size: L4*W2.3*H0.94 inch (102*58.8*24mm)
Product N.W.: about 4.7 OZ (133g)
Charging Time: 2-3 hours
Working Time: up to 4-8 hours
Packing List: 1pc Hand Warmer, 1pc Flannel bags ,1pc sling, 1pc 2A Charging Cable, 1pc user manua

BUTTON USE:
Long press (4-5sec.), power on with red-lights into Warmer mode
Short press ONCE each, red-lights 3stars optional (Low/Medium/High temp.)
Long press (4-5sec.), power off
Short press Twice , battery showing with blue-lights Blue-lights shutoff automatically in 40sec.