bluetooth earbuds,kurdene wireless earbuds with charging case ipx8 waterproof bluetooth headphones bass sound earphones with mics touch control in-ear headset for sports,home black kurdene in the first time, take out 2 earbuds from charging case or any single earbud, and search [s8] to connect with your device. after it, when take out 2 earbuds from charging case or any single earbud from charging case, they will connect automatically triple-click one earbud to wake up & one click to turn off. what should be pay attention to? 1.working temperature: -10°c- 60°c & transmission distance: 15m 2.can wear them to shower, bath, swim. don’t dip earbuds than 1h.