When at home and not traveling abroad, what I do is to set both hands to my local time.
For example – I have the main hands set to 6pm and I have the secondary
24hr hand set to 18hrs, so I know it's the afternoon/evening and not
early morning.
And being used to reading two hands anyway (hour and minute on my usual
watch), but here I see immediately if it's evening or morning.
(usually of course looking outside would tell you that! – but here in
Scotland over the past few weeks it's very difficult to tell the
difference!).
This modified Swiss Ronda 515.24H has an unusual quirk when setting the 24 or second time zone hand.
This is set by pulling out the crown to the first stage, then rotate
the crown anticlockwise to set the 24 hr hand to a time approximately
minutes ahead of the desired time. Push back the crown to it's original position. Now after pushing the crown back in, it takes the movement exactly 5 minutes to compensate for the degree of play in the hands. It then displays the correct time after that five minutes.
I assume this is because the outer scale is 5 minute graduations and
the inner 24hr one 10 minutes and this compensates for the difference.
Clean press fit stainless back
Flat sapphire glass, stainless steel slim case
The watch details are –
Diameter – 40mm, Depth only 7.5mm. Weight 43 g, 3 ATM Water Resistant, Calf Nappa strap with stainless steel buckle, Made in Germany.
So a nice watch and concept with the 2 hands for two times, but is it a winner? Well so far I'm finding it very, very good.
A slight reservation, though personal is that the dial graduations are
very small so if you wear glasses, then you'll need them!
But that said having a separate hand for the 24hr reading is so clever
and does improve on the sub-dial found on other 24hr watches if reading
accuracy is needed.
Anyway it's in my collection now – perhaps as an oddity or an unusual model of it's time and it's certainly a talking point. Botta – you've got to “hand” it to them – they are pretty unique!
UPDATE – 23rd December 2012
Having
had and worn the watch for a while now I am surprisingly finding it
very easy to read – at a glance you can immediately assess the time and
rather accurately too if you look more closely. So it scores highly in that department, which I confess was a concern, but now laid to rest conclusively.
I had a slight niggle due to the shape of the case. Even
although the back is quite tight against the wrist, the front/face of
the watch including the crown is held away from the wrist. Basically
owing to the back diameter being smaller at 30mm that the front,
therefore making the watch top heavy and I found it moved around my
wrist. If the back was 40mm as the front, then it would tend to stay where it was.
So
– I decided to change the leather strap to a silicon deployment variety
– to see if this would improve things – and it worked a treat! – The watch is now held flat against the wrist as it should be and doesn't travel around the wrist. The deployment strap can be adjusted so much more accurately than pre-cut holes in a leather strap. And it actually looks good to. I'll post an image as soon as I can.
Botta with silicon deployment strap replacement
Overall however I am very happy with the watch – in fact even more so now the strap issue is resolved! Just needs a date window now to be pretty much perfect!
Note – The watch movement is a modified version of the Ronda 515.24H.
UPDATE January 2105
Well as with all my watches – if I don't wear 'em I move them on and that's the case with the Botta one handed 24 Duo. Great watch but I simply haven't worn it for months and months – and that's no good at all. Despite being a one off a kind of model that's as beautifully designed as it is made, I've taken it to Auction. It
also might be that as I get older I'm gravitating towards the more
conventional dials and hand layouts (my eyesight is not as good as it
once was) and it's too much trouble to read it ( my brain's slowing down
too! ). Though as I said in the review it's actually very easy – but no longer for me AND I can't see the dial at night – and luminous night reading is becoming an essential for me today. So we'll see what t brings and it could be interesting as it rarely see in an action – so as ever – Watch this space!
ps – I still have my Botta Argos which is conventional dialed and it won't Bekijk meer
Horloges en
breitling super ocean horloges
Eerst aan de wereld getoond tijdens de March Baselworld
tentoonstelling, de Zwitserse makelij Frederique Constant Perpetual
Calendar horloges zijn nu in de winkels en verdienen een close-up look.
Het nieuwe horloge wordt aangedreven door een in-house-made uurwerk
(Frederique Constant heeft 19 Manufacture bewegingen in zijn repertoire)
met de hand gebouwd in het merk Plan-les-Ouates workshops buiten
Genève. Bovendien, elk van de 191 onderdelen in het kaliber is individueel afgewerkt. 
De FC-775 automatisch uurwerk was in het onderzoek en de ontwikkeling podia voor twee jaar. Het eindproduct is een van de gemakkelijkste om eeuwigdurende kalenders te gebruiken op de markt.
Inzet toetsen gemakkelijk de functies aan te passen (de knop in de
buurt van 05:00 voorschotten de maan, de ene in de buurt 08:00
manipuleert de dag en datum, etc.).
Eenmaal ingesteld zal dit zeer geavanceerde regeling rekening te houden
met de 30 maanden en 31 dagen, 28 dagen februari en ook schrikkeljaar
cyclus met de terugkeer van 29 februari vier jaar.
Het zal alleen moeten worden aangepast op 1 maart 2100, toen we slaan
een geplande schrikkeljaar om onze kalender synchroon te houden met de
tijd. 
Een deel van het merk Slimline collectie, de Perpetual Calendar is
tegelijk een robuuste en betrouwbare uurwerk met een sterk esthetisch
design.
Aangeboden in rose vergulde afwerking of in roestvrij staal, de 42mm
geval sport een saffier caseback voor het bekijken van de beweging. Verschillende keuzes wijzerplaat worden aangeboden en het horloge wordt verkocht in een luxe houten kist. 
