The tester works as advertised and comes in an functional case for storage. The picture here only shows the sniffer, the emitter unit is a little square with various leads hanging from it. Both the sniffer and the emitter require a 9V block battery (not included, and a bit of a disappointment at this price point). On the other hand, the emitter features very robust adjustable clamps for bare wire as well as a telephone connector to make wire tracing of a telephone line easier.