Confirming BPH

Hello, There was confusion relating to the type of movement in my wrist watch: 5011 v 51110. So I took a pic at 2sec to count the beats. Is this a valid method of confirming Hz?
In my case I believe it is 2.5Hz, therefore: 5011. Thanks

2 sec. exposure

Very vaild!

Cheers from Isobars.

Great image, thanks for posting.

These are fun photos. I remember Ralph (Rave) taking one during a visit to Schaffhausen several years ago. A great way to see the beats.

Nelson

I had the same question when i got my BP as well. If only my camera took such great shots! Well yours does look like a 5011. Enjoy it! It's definitely a great watch.

Here is a Macro shot of my BP 5002 with the slow beat, 18,800 BPH, or 5 per second.