Now that's impressive!With the Twixt app, my Squale 20 Atmos (ETA 2824) clocks (watches in? ) at +3.2s/day. My SKX is around +15s/day. Pretty good until I look at my 8F56 HEQ which is still tick-on with time.gov after 6 months!
I think you're probably right about it gaining and then losing such that the differences wash out. Frankly, because of it's claimed accuracy, I don't really feel the impulse to check it a often as my other watches....but it could be an interesting study!Now that's impressive!
Be careful though, for these types of tests, for argument's sake, it could have gained 2 seconds in Feb and then lost 1 sec in March and 1 sec in April and been back to spot-on.
My Bulova Precisionist I sold claimed 15 sec/year. My 1978 Grand Seiko Quartz (see avatar) was claimed to be +/- 10-20 sec/year when sold. I have never tested it because it is clearly really close to spot on.
It's earned its reputation for being difficult to get it to work properly, but once you do figure it out, it works well. What has worked for me is using a set of earbuds that have the microphone built in. Using the iPhone mic never worked for me. I attach the mic facing up on a mousepad using some Rodico, then I lie the watch on top of it with the balance as close to the mic as I can get it.Glad to see you got your Kello to work. Are you happy with it overall?
I have heard mixed reviews.
Bottom line - is it worth $10 ?