brand new without box. Suitable for all compatible metal detectors. Coiled lead with 3.5mm jack plug. Constructed with a strong, flexible and adjustable headband with a soft padded band for comfortable use. Full size closed ear cups with soft padding aid comfortable wearing for long periods of time. Hear precise changes in search tone. Stereo and Mono switching function located on the ear piece for easy access. Technical Data Connector 3.5mm Jack Plug Frequency Response 20Hz - 20KHz. Impedance 32 Ohms. Sensitivity 102dB. Driver Diameter 40mm.