Huawei E5220 is 3G mobile WiFi router that comes with LED light and 1150mAh Li-Ion battery, that is rated for 4 hrs of working time in its WiFi mode. In its WiFi mode, the device is able to provide internet connection up to 10 WiFi enabled devices. It can be used with Windows XP，Windows Vista，Windows 7, Windows 8, Mac OS X 10.5，Mac OS X 10.6, Mac OS X10.7 and Mac OS X10.8.
Huawei B681 is also known as Flybox 3G wireless router. It is also a 3G router, supports 3G HSPA+/UMTS 900/2100 MHz and 2G EDGE/GPRS/GSM 850/900/1800/1900MHz bands. It can provide download speed up to 21.6 Mbps and upload speed limit is up to 5.76 Mbps.
The B681 comes with 2 RJ45 ports and 1 RJ11 port. It supports WiFi 802.11 b/g/n and has 1 port for external antenna. It comes with a memory card slot that can be upgraded up to 32GB. It has USB 2.0 port and Led indicator too.
The Huawei B681 measures 180 x 123 x 32.5 mm and weight is 300 gms. It is compatible with Windows 2000, Windows XP, Windows Vista and Windows 7 operating systems.
Huawei B681 specifications
- 3G : HSPA+/UMTS 900/2100 MHz bands
- 2G : EDGE/GPRS/GSM 850/900/1800/1900MHz bands
- Download speed : up to 21.6 Mbps
- Upload speed : up to 5.76 Mbps
- 2 RJ45 ports and 1 RJ11 port
- WiFi 802.11 b/g/n
- 1 port for external antenna
- MicroSD card slot up to 32GB
- USB 2.0 port
- LED indicator
- 180 x 123 x 32.5 mm dimensions
- Weight 300g
- Windows 2000, Windows XP, Windows Vista and Windows 7 supported
Since, it comes locked to Leo carrier of Burundi, you can not use any another carrier SIM on it. Unlock code charge is only 2.38 USD. If interested then pay for router code through paypal button and mention model with IMEI in transaction. For bulk unlock codes refer this article.