10 September 2021Sonim Technologies (SONM.Q) Keeps Itself Dry, Introduces Klein Waterproof Headsets…Kieran Robertson SONM.Q Sonim Technologies (SONM.Q) announced today that it has launched Klein Electronics’ waterproof headsets and Remote Speaker Microphones (RSMs), compatible with the Company’s SecureAudio Connector handset, including XP3, XP5s and…