Enjoy all-day audio with the whiteWI-C400 Headphones from Sony. These wireless headphones utilize an around-the-neck design for comfortable, all-day wear. They feature 9mm drivers and utilize Bluetooth connectivity to stream high-quality digital audio from compatible devices. NFC technology is also onboard for easy, one-touch pairing. When paired with your phone, you'll get vibration alerts when you receive a new message or incoming call. You can navigate tracks, adjust volume, and manage calls with the easy-to-use controls and, thanks to the WI-C400's battery, you can enjoy up to 20 hours of continuous playback on a full charge.