CUI’s CMS series of waterproof micro speakers with ingress protection (IP) ratings of IP67 are housed in compact packages as small as 15 mm x 11 mm. Featuring sound pressure levels (SPLs) ranging from 90 dB to 93 dB at 0.1 meters, nominal inputs of 0.7 W, resonance frequencies from 550 Hz to 800 Hz, and impedance ratings of 6 Ω or 8 Ω, these rectangular models are ideal for portable and handheld electronic devices subject to the moisture and environmental contaminants found in many industrial and outdoor applications.