5.7-cm (2.2") miniature speaker with waterproof, transparent Mylar membrane and neodymium magnet. Very light. Low overall height. Good speech intelligibility. Applications - Outdoor use and in difficult environmental conditions. - Suitable as control speaker in electronic equipment. Rated power/music power: 2 W / 3 W Impedance: 8 ohm Transmission range (-10 dB): 350 - 6800 Hz Mean sound pressure level: 87 dB (1 W/1 m) Resonant frequency: 550 Hz Voice coil diameter: 14 mm Winding height: 2 mm Net weight: 0.031 kg https://elecena.pl/product/18519291/2907-visaton-miniature-speaker-5-7-cm-8-ohm 2021-05-20 https://elecena.pl/product/18519291/2907-visaton-miniature-speaker-5-7-cm-8-ohm 2022-12-07