Hi
Do you have any tattoos on your left wrist?
My versa 2 heart rate wouldn't work on my left wrist as I have my whole wrist covered in tattoos because I had a Blaze and Ionic that worked fine I didn't realise that the versa wouldn't work on tattoos
After researching I found a "fix" I put a epoxy sticker over the diode and it works fine
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Best Answeri hope it works for you
I have exactly the same issue my versa will work on my right wrist even though like you I have both wrists tattooed but because the tattoos on my right are lighter it will work but like you I prefer to wear it on my left and since I found the sticker fix it works perfectly
You might have to change the sticker everyday as a build up of sweat etc from your wrist will "cloud" it
Until Fitbit sort out the tattoo issue this is the best solution that worked for me
Good luck
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