Socket size: 145,5/46,5/153.5 mm, Demo lenses - for opticians, 2 microphones, Mems speaker, touchpad, woofer, Bluetooth 5.0, including charging case, USB-C cable, cleaning cloth, operating instructions, application possibilities: listening to music and podcasts, telephone calls, voice assistant, RRP: € 249,00, further information at: https://wearfauna.com/en/