Features & details [BLUETOOTH 5.0 AND One-Step Pairing] TROGONIC-TE1 wireless earbuds equipped with advanced Bluetooth 5.0 technology, more stable and One-Step connection . Take out two earbuds(Left earbud first) or the Main(L) Earbud, Open Bluetooth function, they will open and connect automatically. TE1 wireless earbuds Supports A2DP, AVRCP, HFP, HSP, can connect with Laptop, iPad, iPhone, Android and talk to SIRI or Bixby. NOTE: Single earbud Mode SUGGEST ONLY adapt to the Main(L) Earbuds. [IPX5 Waterproof and Sweatproof] With the help of IPX5 Waterproof, prevent sweat and rainwater effectively, and you don't need to concern about pouring. It can avoid rainwater and sweat get into earbuds. So that you can enjoy sports, such as jogging and yoga. [Reality Sound AND Long Battery Life] 3D Sound Effect and Binaural Stereo Effect, feel like you are listening the concert on the scene, providing a reality sound for you. Single charging can maintain earbuds working up to 7 hours. 500mAh Charging Case provides 4 times charging for earbuds, totally 35 hours working time. [Binaural call AND Comfortable Wearing] Both earbuds built-in Silicon Mic, offer Binaural call.Note : While calling, both earbuds support listening , But ONLY the Mail earbud (L) Support Speaking. TROGONIC-TE1 earbud only weight 4.6g, as light as one A4 paper, making you have a comfortable wearing and helping you say goodbye to weight burden. Offer S, M, L sizes Ear caps to exchange Better fit, Better firmly wearing, Better comfortable with you.