Sony WF-C510B In-Ear Headphones, True Wireless, Multipoint Connection, Fast Charging, Ambient Sound Mode, Microphone, Bluetooth, IPX4, 11-Hour Playtime, Yellow Let your music accompany you everywhereEnjoy your music for longer with a full charge of the earbuds, for 11 hours of playtime, plus another 11 hours with the charging case. Need a boost? A quick 5-minute charge gives you up to an additional hour of playback. A range of colors, whatever your styleLooking for both style and comfort? The WF-C510 are designed to offer you both style and comfort, and you can choose from blue, yellow, black and white to find the color that suits you best. Everyday ComfortThe WF-C510 are ideal for everyday use and offer Multipoint Connection, Ambient Sound Mode and the ability to customize the equalizer for a richer listening experience. Small size, great soundEnjoy your favorite music with authentic vocals and powerful bass thanks to the WF-C510's Digital Sound Enhancement Engine (DSEE™) and unique sound tuning.