Pair and connect TC417 to your 1st headphones. And turn off the 1st headphones.
Enter TC417 into PAIRING MODE manually: Press and hold the PAIR button for 2 seconds to enter pairing mode. The LED indicator will flash GREEN rapidly.
Enter the 2nd headphones into PAIRING MODE: Please refer to your headphone’s user manual (Usually the LED on headphones flash Blue and Red alternately or flash Blue rapidly when in pairing mode).
Connecting: During the pairing process, keep the devices close to each other and wait. Once connected, LED indicator stays SOLID GREEN.
Now turn back on the 1st headphones, it will auto - reconnect to the TC417.