The Nokia 5210 is Nokia phone which features rubber Xpress-On shells, WAP over CSD and a built in thermometer (the thermometer is actually the internal temperature of the phone's battery, this feature is also present on other phones that have "netmonitor" enabled). The 5210 is nicknamed "The Builder's Phone" or "The Diver" because of its rubber splash/impact proof casing.
Like most of Nokia's phones users can change the casings easily from the original colours: blue or orange mixed with silver and black. The screens LED colour is orange.
The phone has a built in infra red interface which allows it to talk to a PC equipped with an infra red USB device. Nokia supply free software to allow the phone book to be edited and text messages to be typed, sent and read from the PC - a lot easier than using the phone key pad.
