HUAWEI E397u-56:

* 4G LTE FDD (B4) 2100 mhz

* 3G UMTS (B1/B2) 2100/1900 Mhz

* 2G GSM/GPRS/EDGE 850/900/1800/1900 Mhz

HUAWEI E397Bu-7:

* 4G LTE FDD Band 3 (1800 MHz)/ Band 1 (2100Mhz)

* 3G UMTS/HSPA+/HSDPA/HSUPA 2100/1700/850/800 Mhz

* 2G GSM/GPRS/EDGE 850/900/1800/1900 Mhz

HUAWEI E397Bu-501:

* 4G LTE FDD Band 4(1700/2100Mhz) and Band 17 (1700MHz)

* 3G UMTS (B1/B5) 850/2100Mhz

* 2G GSM/GPRS/EDGE 850/900/1800/1900 Mhz

HUAWEI E397u-53:

* 4G LTE FDD Band 2 (1900 MHz), Band 4 (1700/2100 MHz)

* 3G CDMA 800/1900 Mhz & EVDO BC1 & BC15 (1900MHz & AWS)

HUAWEI E397Bu-502 (UML397):

* 4G LTE FDD Band 12 (700 MHz), Band 5 (850 MHz)

* 3G CDMA 800/1900 Mhz & EVDO BC1 & BC15 (1900MHz & AWS)

Specifications:

* Chipset: Qualcomm MDM9200

* Style: USB Internet Express Stick

* Network: 4G LTE

* Frequency LTE: 700/1700/2100 MHz

* HSPA: 850/1900/2100MHz

* GSM: 850/900/1800/1900MHz

* Weight:60g

* Dimensions:93 x 35.5 x 15mm

* Colour: Black

Key Features:

* Up to 75Mbps download speed on LTE with HSPA+ fallback

* Seamless hand-off to DC-HSPA+ /HSPA+ network outside LTE coverage zone, get faster speeds in more places

* Plug and play with Huawei Connection Manager

* 2D rotating USB connector to fit most USB slots

* Store and transfer large files via a microSD™ 32 GBs capacity external memory slot

* Windows XP/Vista/7 and MAC OS compatible