Black Calls/Music In-ear Headset Wireless Bluetooth 5.3 Intraaural 20 - 20000 Hz Microphone type: Built-in Built-in battery Lithium Polymer (LiPo) Go Cable-free withAbsolute Peace of MindCharge the earbuds for 10 minutes before your commutes, and listen for as long as 3 hours. Once fully charged, the earbuds will sustain up to 9 hours of listening, and when charged multiple times with the case, they can support up to 40 hours of listening!Soothes Your EarsLights Up Your LifeSoothes the ears and stuns at a glance, with two refreshing colours: Ceramic White and Isle Blue. Each earbud weighs as little as 3.8 g, and is designed to create a snug fit.Seamless ConnectionsRobust Bluetooth 5.3 connections keep sound and image in sync, for immersive audiovisual experience.Stable AudioThe speaker has passed 26 strict reliability tests, to ensure a sterling listening experience at all times.IP54 Dust- andSplash-ResistanceIP54 dust- and splash-resistance keeps the earbuds durable during workouts an