Zenith Defy El Primero 21 Black Ceramic Openworked 44mm New Reference 49.9000.9004/78.M9000 KEY POINTS 1/100th of a second Chronograph movement Exclusive dynamic signature of one rotation per second for the Chrono hand 1 escapement for the Watch (36,000 VpH – 5 Hz) ; 1 escapement for the Chronograph (360,000 VpH – 50Hz) Certified Chronometer MOVEMENT Name El Primero 9004 Auto/manual Automatic Family El Primero Calibre 14½“` (Diameter: 32 mm) Thickness 7.9 Components 293 Jewels 53 Frequency 36,000 VpH (5 Hz) Power-reserve min. 50 hours Finishes Special oscillating weight with satined finishings FUNCTIONS Hours and minutes in the centre Small seconds at 9 o’clock 1/100th of a second Chronograph: – Central chronograph hand that makes one turn each second – 30-minute counter at 3 o’clock – 60-second counter at 6 o’clock – Chronograph power-reserve indication at 12 o’clock CASE DIAL & HANDS Diameter 44 mm Diameter opening 35.5 mm Thickness 14.50 mm Crystal Domed sapphire crystal with anti-reflective treatment on both sides Case-back Transparent sapphire crystal Material Black ceramic Water-resistance 10 ATM Dial Openworked with two different-coloured counters Hour-markers Black ruthenium-plated, faceted and coated with SuperLuminova black SLN [Hour markers] Hands Black ruthenium-plated, faceted and coated with SuperLuminova black SLN [Hands] STRAPS & BUCKLES Reference 27.49.9000.9004 Designation Ceramic bracelet Interhorn 23/22 Family CR Metal
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