User's Guide

Fig. 3
Using Bluetooth function:
1. Using Bluetooth for the first time, you need to pair your mobile phone with this unit. Activate
your mobile phone's Bluetooth function, then search new device. When the mobile phone detects
this unit (named as "BT21"), normally the connection will be built-up automatically and doesn’t
request a password, but if there is a need (special design of some cell phones), please use the
password "0000".
2. In the music playing mode, when there is an incoming call, this unit will automatically switch to
telephone mode.
Bluetooth calling
1. Press to answer the incoming call, press and hold for 3 seconds to reject the incoming call.
2. Press to hang off a call.
3. Press twice to dial the last number automatically, press again to cancel the current dialing.
4. Long press the button to change audio output from your cellphone or car stereo system
during calling.
5. When making a call, you can only dial the phone number by your mobile phone, but once the
call connected, you can use the hands-free function to enjoy it.
NOTE: 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. However, there is no
guarantee that interference will not occur in a particular installation. If this