🥑🥑Damping Button Design, Comfortable pressing.Life waterproof & sweatproof for USB charger port design.Wireless bluetooth earphones, lavalier retractable cable bluetooth earphones, sports monaural, bluetooth earphones in-earUpgrade LED Battery capacity display.Monitor the battery status of the earphones at any timeMatte back material for comfortable grip.wireless headphonesBluetooth earphonesK55 Wireless EarbudsMore Color AvailableBattery Capacity DisplayOne-key Button smart processAuto RebackAutomatic smooth contraction, there is no need to put the earphones in the ear for a long time to cause ear discomfort. When not in use, one key is retracted to the earphones, clip is on the clothes, which is very convenient to use.Bluetooth 5.2 VersionsFast 5C Charger, 20min=99% full batteryWorking Time: Almost 20HoursOne Drag Two connect support