Sony Wireless Bluetooth Up to 20 Hours of Continuous Headphones with 2017 L WI-C400 Earphones Compatible, Playback, In-Ear Microphone, Model, Blue,

When a call comes in on the paired smartphone, the neck part vibrates to notify you of the call. Hands-free calling Adjustable cable length Enjoy up to 20 hours of wireless listening time Easily operate smartphones and other players from your neck No noise canceling function Charging time: Approximately 4.5 hours Accessories: USB cable (approx. 50cm micro USB cable), earpieces (hybrid earpieces SS, S, M, L (2 each)), warranty card, instruction manual, reference guide