BOYA BY-AP100, semi-in-ear earbuds, TWS, BT 5.1, blackListen More,Enjoy BetterSlide cover to open your BY-AP100, get a Bluetooth 5.1 super connection to your phone, it will lead you to a 27 hours nonstop joyful time of high quality music…Slide to OpenSlide-cover design allows your easiest access to the product.Bluetooth 5.1Bluetooth 5.1 version for higher-speed.more stable and longer distance connection.Smart touch Operationintelligent touch control that integrated almost all functionsPowerful BassPowerful bass provided by 13mm dynamic unit with high elasticity titanium film.Charge On-The-GoConveniently charged through USB Type-C charging port,with 4 light indicators real-time presenting the battery level.• Bluetooth 5.1• Powerful bass• Comfortable wearing• Smart touch operation• Single/double ear mode• Clear calls• Type-C charging• 6+21 hours battery lifeWeight: 3.7 g (single earbud), 42 g (charging case)