Sennheiser PX 210 BT Instructions for Use - Page 13

Putting the PX 210 BT into operation Connecting the PX 210 BT to the audio source CAUTION! Danger of malfunction! The transmitted radio waves can impair the operation of sensitive and unprotected devices. ̈ Only use the headphones in aircraft where wireless Bluetooth transmission is permitted or use the audio cable instead (see "Connecting the PX 210 BT using the audio cable" on page 15). The headphones comply with the Bluetooth 2.1 standard. In order that data can be transmitted wirelessly using Bluetooth technology, you have to register your headphones with your audio source (pairing). The headphones can save the connection profiles of up to 8 Bluetooth devices with which they have been paired. After switch-on, the headphones automatically connect to one of these devices. If you pair the headphones with a ninth audio source, the saved connection profile of the first Bluetooth device will be overwritten. If you want to reestablish a connection with the first audio source, you have to pair the headphones with this audio source again. If your audio source does not have a Bluetooth interface, use an optional dongle (see "Accessories and spare parts" on page 22). In addition to adding Bluetooth capability to your audio source, this dongle uses apt-X, a technology that ensures crisp, pure and full stereo sound. With apt-X, Bluetooth can now offer wireless audio quality that is indistinguishable from the highest quality wired connection. A connection to the headphones is only possible if your audio source supports the A2DP profile. 12