Use the flat tab – Kello Review

I struggled for several hours to pick up a signal using the iPhone ear buds. That is not the microphone, as I discovered, the flat piece with the (+) (-) sign, underneath lies the microphone. Once I found this, the app works. How accurate, I can't say until a few days pass. I adjust a Rolex 1225 and a Seiko 7006. At the moment they seem to be keeping time at a constant rate..
Review by Jarob54 on Kello.