1. Press and hold MFB button for 3-5s to enter pairing mode, the LED indicator light will flash blue and red alternately, and you could hear "Pairing".
2. Turn on the Bluetooth function of device A, search and connect [CT003] in the Bluetooth device list. When you hear "connected" and the LED indicator turns blue and flashes slowly every 5s, it means the headset is connected to device A.
3. Turn off the Bluetooth function of device A, when you hear "Disconnected", the LED indicator light will flash blue and red alternately, [CT003 ] will re-enter the pairing mode.
4. Turn on the Bluetooth function of device B, search and connect [CT003] in the Bluetooth device list, when you hear "connected" and the LED indicator turns blue and flashes slowly every 5s, it means the headset B-device connected to device B.
5. Turn on the Bluetooth function of device A, and click "Connect" [CT003] in the Bluetooth device list. When you hear "connected" again, it means that the headset has been successfully connected to device A and device B at the same time.
Note: When you listen to music on device A, and device B has an incoming call, just click the MFB button to answer the call (please check the manual for more details).