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The CHRONOMASTER Open offers a view of the beating heart of the El Primero movement from the dial. Crafted in a sleek 39.5mm steel case, this version features a matte silver dial with tricolour counters and a transparent counter for the running seconds, paired with an integrated steel bracelet. Powered by the El Primero 3604 1/10th of a second automatic chronograph movement.
SPECIFICATIONS | |
Key Points | Automatic El Primero column-wheel chronograph able to measure and display 1/10th of a second Opening revealing the legendary beating heart of the El Primero movement Silicon escape-wheel and lever Increased power reserve of 60 hours Stop-second mechanism |
Movement | |
Name | El Primero 3604 |
Auto/manual | Automatic |
Components | 269 |
Jewels | 35 |
Frequency | 36,000 VpH (5 Hz) |
Power-reserve | approx. 60 hours |
Functions | Hours and minutes in the centre Small seconds at 9 o'clock 1/10th of a second Chronograph: - Central chronograph hand that makes one turn in 10 seconds - 60-minute counter at 6 o'clock - 60-second counter at 3 o'clock |
Case, Dial & Hands | |
Thickness | 13.60 mm |
Water-resistance | 10 ATM |
Case-back | Transparent sapphire crystal |
Crystal | Domed sapphire crystal with anti-reflective treatment on both sides |
Hour-markers | Rhodium-plated, faceted and coated with SuperLuminova SLN C1 [Hour markers] |
Diamonds | No |
Straps & Buckles | |
Interhorn (case) | 20 |
Interhorn (buckle) | 16 |
Interchangable Strap System | No |
298 OAKBROOK CENTER
OAK BROOK, IL 60523
December 16TH - December 21ST: 10a-7pm
December 22ND: 11a-6pm
December 23RD: 10a-7pm
December 24TH: 10a-4pm
Christmas - Closed
December 26TH - December 28TH: 11a-7pm
December 29TH: 12p-5pm
December 30TH: 11a-7pm
December 31ST: 11a-4pm
New Year's Day: Closed
All other dates:
Monday-Saturday: 11am-7pm
Sunday: 12pm-5pm
E-140 Woodfield Mall
Schaumburg, IL 60173
Monday-Saturday: 11am-6pm
Sunday: 12pm-6pm