COMFORTABLE FIT: Designed small and light in an edge-less rounded shape, these ear buds fit securely and comfortably in your ears, so you’re free to focus on what matters - your music STABLE BLUETOOTH CONNECTION: The Bluetooth chip, optimised antenna design, and low audio latency ensure uninterrupted listening – Fast Pair for Android/Swift Pair for Windows 10 provide easy pairing IPX4 WATER RESISTANT: Splashes and sweat won’t stop these Sony earphones, so you can keep moving to the music