[. . . ] This product can be used as an audio accessory for devices supporting either the Headset or Handsfree Bluetooth® Profiles. Before getting started, please review the Important Safety Information booklet included in your package. For additional help, service, or support information, refer to your product Warranty card, or visit www. [. . . ] During a call, press and hold the Call Control button to transfer the call back to your phone. Alternatively, press and hold the Call Control button when your phone is ringing to reject a call. US This is not a condition of your warranty, But will assist us in providing the best possible service and technical support for your product. The radiated output power of this internal wireless radio is far below the FCC radio frequency exposure limits. Nevertheless, the wireless radio shall be used as described in the manual. The internal wireless radio operates within guidelines found in radio frequency safety standards andrecommendations, which reflect the consensus of the scientific community. Plantronics therefore believes the internal wireless radio is safe for use by consumers. The level of energy emitted is far less than the electromagnetic energy emitted by wireless devices such as mobile phones. However, the use of wireless radios may be restricted in some situations or environments, such as aboard airplanes. If you are unsure of restrictions, you are encouraged to ask for authorization before turning on the wireless radio. This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. [. . . ] To view the Declaration of Conformity for this product please see www. UK See package for product model number and US refer to the table below for approved use. The Bluetooth name and the Bluetooth trademarks are owned by Bluetooth SIG, Inc, and are used by Plantronics, Inc. [. . . ]