LATEST BLUETOOTH 5.0 - Amuoc Wireless Earbuds adopts Bluetooth 5.0 to ensure most stable connectivity, smoothest transmission and longest distance with low consumption. It enables revolutionary Dual-ear Calling, which means you can call/answer with both Earbuds simultaneously. TRUE STEREO AUDIO - Crystal clear bass sound with signal range up to 33ft. With the unique dual driver system, these headphones not only music but also chat becomes enjoyable. Acoustic echo cancellation guarantees high quality sound and enables you to call clearly at any place. [MONO & STEREO MODE] - Amuoc true wireless Bluetooth 5.0 Earbuds support working with 2 devices separately in mono mode, or use together as a pair in stereo mode. The earbuds with no wire between bring you nothing but convenience and enjoyment sharing. Convenient magnetic charging truly eliminates any cables or cords. PORTABLE 2200 mAh CHARGING CASE - The charging case equipped with built-in 2200 mAh battery which can charge the earbuds 18 times and charge your smartphone 1-2 times. Enjoy up to 64-72 hours of playing time with charging case. Never run out of power while on the go. Perfect for packing along for your day to life activities. ERGONOMIC DESIGN - Amuoc will not disappoint you with its high-end look and finish, which separate itself from other competitors. Mini and Ultra lightweight sweatproof in-ear design for comfortable wear and secure fit. Three different sizes of earcaps, guarantee your earphones to stay comfortably firm in place.