From Sony the Behind-Neck Wireless Headset with in ear Earbuds. This headset comes with a black finish. Model: WI-C400/BZ

Features:
- Easy Bluetooth connectivity with NFC one-touch
- Up to 20 hours' of battery life
- 9mm neodymium drivers for dynamic sound
- Comfortable behind-the-neck style with cable management
- Vibration for incoming calls
- Voice Guidance for Status Notification
Model Number: WI-C400/BZ