Posted on November 9, 2017
About a year ago, I wrote how useful the Apple watch was for me, but one problem still was unless I used my mess of cables hack I couldn’t get VoiceOver from both my iPhone and watch simultaneously.
The Aftershokz headphone company released their Trekz-Titanium model in early 2016 and many people in the blind community were excited because they claimed the titaniums had Bluetooth Multipoint. They did, but after 1-2 hours of trying to get it working I gave up in frustration.
Then the Apple AirPods came out and I was hoping they could do the trick, but no, the user has to switch between devices; they won’t do it automatically.
Then my friend Hai Nguyen Ly who introduced me to bone conduction headphones 4+ years ago said in passing last month, that he’d gotten them working in Multipoint with both his iPhone and Apple watch, so I decided to reexamine the challenge, and this time was successful within about 30 minutes.
Here are the steps to do it, this works for both the Aftershokz Trex Titanium, and Trekz-air models; hopefully they make sense.
1. first you have to reset the headset, Turn off the headset before beginning to reset it.
2. Enter pairing mode by turning on the headset and holding the volume up button for 5-7 seconds.
You will hear the Audrey Says™ voice say “Welcome to Trex Titanium, and then shortly after, “pairing”. The LED will flash red and blue.
Audrey will say Trex-air if you have that model instead.
3. Then press and hold all 3 buttons on the headset for 3-5 seconds. You will hear a low pitched double beep, or feel vibrations.
4. Turn the headset back off.
5. Enter pairing mode again by pressing and holding the volume up-power on button. Audrey will first say “Welcome to Trex Titanium” and then “pairing.” The LED will flash red and blue.
6. Continue to press-hold the volume up button while then simultaneously also pressing and holding the triangular multi-function button on the left. after about 3 more seconds Audrey will say Multipoint enabled.
7. In your first device’s Bluetooth settings, select your Trekz model. Audrey will say “Connected.”
8. Turn the headset off.
9. Reenter pairing mode again by pressing and holding the volume up-power on button. Audrey will first say “Welcome to Trex Titanium” and then “pairing.” The LED will flash red and blue.
10. In your second device’s Bluetooth settings, select your Trekz model. Audrey will say “Connected” or “Device 2 Connected.”
11. Turn the headset off.
The next time you turn your Trex headset on it will connect to both devices. It works pretty well, though here are some things I’ve noticed.
If I move out of range of one of the connected devices and then move back into range, the device doesn’t always reconnect. Turning the headset off and back on reconnects both again.
I said Multipoint lets you connect 2 devices simultaneously but that doesn’t mean you can hear audio from both simultaneously. only one at a time. This means if I’m playing a podcast on my iPhone, I won’t hear anything from my Apple watch; that has already bit me a few times. if I pause the podcast on the phone, audio from the watch will start playing in about 2 seconds.
Beyond that, using Multipoint is still quite useful. I can use either device in a meeting, concert, or at church. I can also use either device while traveling in loud situations like around heavy traffic. I can also use the watch in situations where the watch’s built-in speaker would be too quiet to hear. Even with the limitations I’ve mentioned , I think you’ll still find using your Aftershokz with Multipoint a productivity boost.
Oh, my mess of cables hack is still useful if I want to hear more than 2 devices; and with that solution, the audio really is simultaneous.
Accessibility Insights 
Thank you It worked on very first try to my new iphone 11.
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