Specifications:Enjoy hands-free calling with the ear-hook Headphone.This headphone has a single earpiece design and offers a wireless range of about 10m.Its boom microphone ensures clear and distortion-free voice.You can use this it with compatible Bluetooth-enabled devices.To keep external disturbances at bay, this black headset offers a noise cancellation feature.In addition, it facilitates convenient volume control.Item Name: bluetooth-compatible HeadphoneQuantity: 1PcBluetooth Version: V4.0Bluetooth Range: about 10mSound Track: StereoPower Supply: Build-in Battery (Included)Features: Ear Hook, Earpiece, Handsfree Call, Volume Control, Rotating MicrophoneSize: 18.6cm x 11cm x 3.5cm/7.32" x 4.33" x 1.38" (Approx.)Notes:Due to the light and screen setting difference, the item color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Headphone1 x USB Cable