Free Hand Warmers Rechargeable 2 Pack （5pcs limited）

Magnetic Design: 
Snap two warmers together for easy portability, or use one alone for single-handed warmth.

Flash Charge In Just 1H: 
With two 3000mAh batteries, get 3 hours of warmth from a 1-hour charge. 

4-Temperature Settings: 
from air-conditioned offices to outdoor adventures.
Level 1: 104°F
Level 2: 113°F
Level 3: 122°F
Level 4: 131°F