The entire 50 series from Sena is equipped with sound from Harman/Kardon. The Sena Quantum series thus features advanced speakers and microphones, which the manufacturer claims improves communication while riding a motorcycle. Voice control works with digital assistants, and users can choose between three different communication modes. For example, it is possible to communicate with a private group of up to 24 participants over a range of up to eight kilometers. Public groups allow communication with an unlimited number of users. Additionally, Sena devices come with classic Bluetooth connectivity, enabling interaction with other devices.