Model Number: HT880-1 Brand Name: Aoolif Key Specifications/Special Features: USB hand warmer features: 1) New model developed on June,20152) 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 power station 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,etc.
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