Specifications: Enjoy hands-free calling with over-ear headphones. This headset features a single earpiece design and provides a wireless range of about 10m. Its boom microphone ensures clear sound without distortion. You can use it with compatible bluetooth devices. In order to avoid external interference, this black earphone offers noise cancelling. Also, it helps with convenient volume control. Product Name:Bluetooth Compatible Headphones Quantity: 1 Bluetooth Version: V4.0 Bluetooth range: about 10m Audio Track: Stereo Power: Built-in battery (included) Features: earhook, earpiece, hands-free calling, volume control, rotating microphone Dimensions: 18.6cm x 11cm x 3.5cm / 7.32" x 4.33" x 1.38" (approx.) Notes: Due to different lighting and screen settings, the color of the item may be slightly different from the picture. Due to manual measurements, please allow for slight size differences. Package includes: 1 x Bluetooth Compatible Headphone 1 x USB Cable