The Huawei B681 is a wireless router that supports multiple devices and high-speed internet connections. It has a built-in 3G modem that supports HSPA+ technology, providing download speeds of up to 28.8Mbps and upload speeds of up to 5.76Mbps. The router also has four Ethernet ports for wired connections and supports Wi-Fi 802.11b/g/n standards. It has a sleek design and can be easily set up and managed through a web interface.

The B681 is a router manufactured by the company Huawei that allows multiple devices to connect to a network and communicate with each other. It works by receiving data packets from devices and forwarding them to their intended destination. The router is assigned a unique IP address , which serves as its identifier on the network.

To access the router's settings and configure its functions, users can log in using a web browser and their and . Once logged in, users can customize various settings such as network name, password, and security protocols. They can also set up parental controls, prioritize bandwidth usage, and monitor network activity.