For hearing protection, ISOtunes Sport products are tested and approved in accordance with ANSI S3.19-1974 specifications. Additionally, SafeMax Technology is built into every product to limit volume output to 85 dB. The CDC identifies 85 dB as the safest maximum level of sound exposure for an 8-hour period.
Beyond hearing protection, all ISOtunes Sport products are tested to IEC standard 60529 for International Protection Markings. This IP-rating classifies our products by their ability to protect against solids (dust and debris) and liquids (water and sweat).