Introducing the Sony WI-C100 Wireless Headphones with microphone! Delivering up to 25 hours of battery power, enjoy non-stop music with these Bluetooth earphones! Quick charging is also included. Sound quality is excellent, with our Digital Sound Enhancement Engine (DSEE) restoring compressed music files closer to their original recording. You can enjoy a personalised sound experience on these Sony wireless earbuds-choose from the list of genre presets or create your own via the equaliser in the Sony Headphones Connect app. IPX4 water resistant, neither rain nor sweat will stop your music! As these are earphones with mic functions built-in, you can enjoy clear hands-free calls on the WI-C100, and get help from your preferred voice assistant.