Harmonics Klip, a Dual-purpose music and calling enabled retractable Bluetooth earphone with CVC noise cancellation technology to let you enjoy the freedom of Bluetooth with clarity of calls and superior quality music. Our voice calling feature allow for easy dial-out. Convenient quick-action button retracts earbud instantly letting you listen only when you need to and keeps your ear free. Clip the headset to you clothing or wear it around your neck using the included lanyard. Compatible with all Bluetooth enabled phones including Android Smartphone's and iPhones.