What is the radio standard in casio watches and is it supported in smartphones?

Question

Android

Some time ago, I bought a casio chr-100-1 watch. I bought it because of the function of measuring the pulse. The principle is simple. Chest sensor. 5-10 seconds of synchronization and heart rate data are displayed on the watch screen.
Later, while riding a bike, Ketler discovered that a similar chest strap went to the bike and that I could monitor my heart rate on the machine's screen and on my watch at the same time.
There was a logical desire to log readings and build graphs, but no ant + applications (SE live with walkman) find anything. Bluetooth android 4.4 (nexus 4) also does not see anything.
If it weren’t for the exercise bike, then I would have attributed everything to some kind of Casio radio communication standard adjusted for myself, but there is something common here, because. There is support on different hardware.
Interested in what kind of standard it is and is it possible to receive data on a smartphone?

Answer 1

Looks like I found the answer to my question.
According to this (pdf 1.1 MB) document, the chest strap and watch communicate at a frequency of 5.3 kHz. As I understand it, at the moment, support for this standard is implemented only in cardio equipment, sports watches and other related equipment.
In order to take data from the chest sensor that came with the watch, you can try using Runtastic Receiver and Heart Rate Monitor , or, which would be more correct, replace the chest sensor with Runtastic Heart Rate Combo Monitor , etc. on 5.3 kHz equipment, track data only in online mode, and collect statistics on the phone via BLE.

Answer 2

It seems that there is a communication standard for just the same simulators and sensors. I had a similar watch with a chest sensor, the instructions mentioned that if your simulator supports it, then the readings will be displayed there as well. I don’t remember what it’s called, the instruction and the watch remained in another country.