The headphone is rated IP55 (5 dustproof, 5 waterproof) based on the IEC 60529 testing standard, under controlled laboratory conditions. The dustproof and waterproof functions are not permanently guaranteed, and protective performance may decrease due to factors such as daily wear and tear or device aging. Avoid charging the Buds in damp conditions. The Neckband Pro is not designed for water sports such as swimming and should not be worn during showers. In the event of intense physical activity, heavy sweating, or exposure to moisture while you wear the Neckband Pro, wipe them clean with a soft, dry, lint-free cloth and store them properly. Do not attempt to expedite the drying process by using heat or compressed air on the Neckband Pro. Note: damage caused to the Neckband Pro by immersion in liquids is not covered under the warranty.