Features:
 20000mAh High capacity
 High quality lithium polymer power bank could charge your phone, pad 
and other intelligence devices whenever you are in business trip or 
travel.
 Stealth digital display
 Seeing the power shows 100%, it seems to see a sense of security.
 Low Power Devices Charging
 Safely charge lower power devices such a s bluetooth headsets or finess
 bands.  Simply double press the power button to enter 2-hour low power 
charging.
 Dual USB Output and Input port
 Design for dual USB output could better and quicker charge your devices
 when you own different kinds of digital devices. Micro USB+ USB-C dual 
input design means the two most common interface types exist at the same
 time. Even if you forget to take the original charging cable out, you 
can easily find Micro USB or USB-C cables to charge your portable 
charger without worry for forgetting cables. 
 Muliti Portect safety system
 Surge protection, short circuit prevention and more advanced safety features protect you and your devices.
 Specifications:
 Model: QB821 (20000mah version)
 Battery type: Rechargeable Lithium Polymer Battery
 Battery energy: 74Wh(20000mAh 3.7v)
 Rated Capacity: 12600mAh 5.1 V(TYP 2.4A)
 Size: 149.3*70*25mm
 Weight:451g
 Input: 5V=2A   9V=2A
 Single port output:5.1V=2.4A  9V=2A  12A=1.5A
 Dual port output:5.1V=3.6A
 Package Contents:
 1 x ZMI 20000mAh Power Bank
 1 x 2 in 1 Micro to Type-C Cable  
 1 x Instructions 

