It features Bluetooth and can be connected to wireless or wired headsets via a 3.5 mm jack. The IP65 protection rating, which safeguards the phones against water and dust, makes them particularly useful for specialized areas in industry or construction sites. In combination with the base stations M700 or M300, the cordless M85 also offers a variety of telephony functions such as voicemail, automatic call forwarding, call log, caller identification, and direct search in the company directory.