320mAh Rechargeable Hand Warmer Portable USB External Battery Pack
Double sides warm;Exquisite appearance and small size ,convenient to carry;Low and high temperature modes and constant temperature system(about 30°~60°, last for about 3~ 4 hours )
Work as Power Bank. Could charge digital products, including mobile phones, MP3 players, digital cameras, etc.
Rechargeable. Charges via USB.
