Benq-Siemens T51 is a mobile phone in the clamshell form factor. The phone's dimensions and weight are: 86.4 x 45.3 x 20.8 mm and 85.5g. The device is designed to operate on the following networks: GSM 900 / 1800 / 1900 MHz. It is necessary to note the presence of a digital camera 2 MP, microSD, GPRS Class 10, Bluetooth v1.2, USB v1.1, Wap 2.0, Predictive Text Input T9.