Wireless backphones are fully shower proof, foldable, compact and extremely lightweight. Advantages : the WS4 headset control has the same internal menu as the WS5, but offers a further added feature - The module can be quickly removed from the headband, then used with one of our WS4 accessories, fit it onto the stem, on your wrist, or in your pocket (adapters sold separately). The control module indicates the battery level of headphone and coil. This headset can control your coil! The WS4 headset can drive the detector alone, allowing you to detect in an even lighter configuration. In the absence of the remote control, this headset will allow you to adjust the main settings such as: discrimination, sensitivity, ground effects, 5 multi-tones + full tones + pitch mode, 35 frequencies, from 3.7 to 27.7 kHz, 10 factory programs + 8 user programs, volume, reactivity, TX power, tracking, frequency offset, iron volume and audio answer. The WS4 headset is designed to last and certified LONGTIME, with a 5 year support.