This router has two models:
Model A : No built in 3G modem, you can buy the external 3G dongle separately
Model B : Bulit in 3G modem, you will need to but any external 3G dongle, and just plug your 3G sim card into the rotuer. Model B specification is right at the bottom of the page.
1800MAH MOBILE CHARGER WITH 3G WIFI ROUTER (FREE SHIPPING)
This is a mini battery powered 3G router that has a built in 1800mAh battery that can last for up to 4 hours of usage or 8 hours of standby time. Because it has a built in battery, this same battery that power the router can also be used to charge any smart phones via its USB port.
3G Router Mode:
(take notE that USB modem/Dongle is not included)
Battery Charger MODE:
Act As Battery Charger For MOBILE PHONE:
Portable Router Mode
ACT as PORTABLE ROUTER FOR USE in HOtel & Campus
Portable Mobile Charger with 3G WiFi Router