ARNOLD & SON ULTRATHIN TOURBILLON
Case: 41.50mm diameter x 8.30mm height - 18k red gold or 950 platinum - domed sapphire crystal with A/R coating on both sides over dial, sapphire crystal with A/R coating on caseback - 30m water-resistance
Dial: blue cosmic grené granulated dial for red gold - green cosmic grené granulated dial for platinum - off-centred and domed hours and minutes dial in white mother-of-pearl, Roman numerals, openworked hands - tourbillon aperture at 6 o'clock
Movement: A&S8300 calibre - ultra-thin, manual-winding tourbillon - 32mm x 2.97mm - 21,600vph/3Hz - 100h power reserve - hours, minutes, seconds on the one-minute tourbillon
Strap: red gold: blue alligator strap with handstitched red gold thread and folding clasp in red gold - platinum: green alligator leather with handstitched platinum thread and folding clasp in platinum
References:
1UTBR.U01A.C209A red gold
1UTBR.XF01A.C208A platinum
