Answer calls with any Bluetooth device with this comfortable, lightweight, wireless headset. Use Bluetooth to pair with your phone or tablet (iOS or Android), computer (Mac/PC) or deskphone with Bluetooth capability. Use as a softphone headset with its USB connectivity to connect to VoIP apps on your computer. Whether Bluetooth or USB, the base has the connectivity so your headset is always wireless. Range from the base is 33'. Enjoy up to 12 hours talk time with at least 300 hours standby. Headset charges while connected to the USB port or in base. Comfortable headband wearing style with extra-large leatherette ear pad is ideal for those spending a lot of time wearing a headset. Volume Control and Microphone Mute can both be adjusted on the headset. Noise-canceling microphone filters out ambient noise around you to ensure your voice will be heard for more natural conversations. Noise reduction and echo cancellation ensure your calls are more crisp and clear. Micro-USB cable is 5'. Headset Mic MuteHeadset Volume DownHeadset Volume UpMultiple Function ButtonHeadset Status LEDNoise Canceling Microphone Base Back Headset Charging ContactsLEDBluetooth Pairing ButtonMicro-USB Port ZūM Maestro USB/BT Combo Headset Features Compatibility: USB for Softphone Mac/PC. Smartphones and tablets, iOS and Android. Desktop Phones with Bluetooth capability. Bluetooth Version V4.1, backward compatible. Range: up to 33’ (10m) from Base. USB connection to computer allows for VoIP calls, like Skype or Skype for Business (Lync), or other VoIP apps. Active DSP noise cancellation microphone.Sound quality: DSP noise reduction; echo cancellation; tone control; wide band and narrow band audio. Up to 12 hours talk time, at least 300 hours standby. Charges while connected to the USB port or in base.Volume Control and Microphone Mute can both be adjusted on the headset.