Model Number: HT680-2 Brand Name: Aoolif Key Specifications/Special Features: Features:1) New model developed on June,2015 2) With 8-10 hours warmer heating time3) Hand warmer temperature: 42-48°C4) Two functions: charge mobile/warm your hand(two sides)5) ON--OFF control buttonOur warranty:24 Month from shipping dateHT540 New Design electric hand warmer 10-12 hours heating time is hand warmer with PowerStation function,emergency power bank compatible withmost ofany micro USB device,Smartphone/tabletsare compatible

Here's a rundown of all the features:
New design round electric hand warmer 10-12 hours heating time
1.Portable,easy to carry.
2.Charge MP3/MP4 ,PAD tablet PC,PSP and most brand mobile phone such as iPhone and more.
3.Build-in 8800mah 18650 Li-ion battery
4.Aluminium alloy +ABS
5.Built-in short circuit, overcharge protection
6.Multi-function charger
7.High-efficiency charging