The Willtek 4100 Series can put an end to unnecessary returns and within one minute you can determine if the mobile is really defective. Different models are available to meet individual needs and the multiple language user interface is available in English, German, French and Italian. Provides enhanced specifications: RF power level accuracy < 1 dB (4107S), Supports Dual and triple-band mobile phones on 900/1800 MHz, 900/1900 MHz, 900/1800/1900 MHz. Designed for different user types: the 4107 for repair shops and the 4107S for service centres. Delivers intuitive operation and Autotest features to minimize training requirements. Allows remote operation and management (4107S) via a standard PC.