Electronic hookswitch (EHS)/Softphone compatible: take calls from the headset with VTech EHS Kits (sold separately). optimized for Softphone remote call control from the headset. 500ft range: unique antenna design, noise-filtering technology, 64-bit encryption, and DECT 6.0 technology cuts down on interference and Static to give you calls that are crisp, clear and secure. Secure magnetic Charging Cradle: magnets anchor the headset in the Cradle to ensure a full charge every time. Eco mode power-conserving technology and 3-level battery status indication: Eco mode manages power consumption, so the system uses less energy and you get the best battery life. One-touch call, answer, end call, volume level and mute with multiple wearing styles (choose which fashion works best for you: over-the-ear, over-the-head or behind-the-neck.)