[BLUETOOTH UPDATE:]I purchased the J22 Bluetooth receiver, about $20, and attached it with velcro strips to my Sony MDR-DX200's (see attached first photo). Works great! Microphone on the J22's sucks, but reception ok. Bit of a lag noticed watching video but I usually listen to music.
My Sony headphones have a very lengthy cord. I prefer headphones that have a jack you can then plug any length cord you want. Then I'd use a very short patch cord from the J22 to the headphone. For now, I just took the long cable, folded it up and stuck it up under the head band (that's why it looks so thick on the photo).
By the way, the Sony's were cheap as dirt... I think I picked them up for under $30 years ago. Add the J22 bluetooth and I have a set of bluetooth capable Sony's for less than half the price of what over-the-ear headphones cost today. Although this one seems to be a good deal:
https://www.bestbuy.ca/en-ca/product/sennheiser-hd-350bt-over-ear-sound-isolating-bluetooth-headphones-black/14454611Anyways, I can easily remove the J22 bluetooth receiver module from the Sony's and plug in my ear-buds and use those when needed. Having it lets me repurpose all my old but still functional earphones without having to buy new ones or having to charge a million devices.
On another note... anyone have any experience with the HEART RATE MONITOR on the Apple Watch Series 3? Are they accurate? Do they really properly measure RESTING HEART RATE? I understand that perhaps exercise rate may be hard to pick up (or is it easier?). Anyone able to verify their watch is actually properly measuring the heart rate?
See the attached second photo. What am I supposed to make of this? Here is what Google says:
What should my resting heart rate be at 45?
The normal range is between 50 and 100 beats per minute. If your resting heart rate is above 100, it's called tachycardia; below 60, and it's called bradycardia. Increasingly, experts pin an ideal resting heart rate at between 50 to 70 beats per minute.
Assuming that's true, then I should be ok, it's not too low. I'm not sure how much to trust this gadget.