Customized earfins & ipx7 waterproof – exclusive silicone ear fins powered by freebit provide you comfortable and secure-fit. reinforced design and ipx7-rated protect the earbuds from sweat and water, and allows you to enjoy your positive and active lifestyle. uninterrupted connection & auto pairing – seamless connection between single mode with either earbud or single/twin mode. both earbuds support working as the first/master unit. instant pairing right after out of charging case. full control & effortless operation – on-ear sensitive button control delivers comfort touch and enables your accurate operation on switching tracks, adjusting volume, handling calls and activating voice assistant as hassle-free as possible. type-c charge & power indicators – battery-shaped indicators inside the charging case give you a clear picture of the battery left in the case, one led stands for 25% power. type-c charge brings convenience and ensure stability. pleasant sound & 20 hours – built-in 6mm bio-compound diaphragm driver streams finely tuned sound with outstanding clarity and low distortion. around 4 times full recharges by charging case enrich your leisure. note: soundpeats provides 12 months hassle-free warranty to ensure the enjoyment of your purchase.