# Rolex Daytona 116519 BTF Blac Dial Diamond Marker Oysterflex

- **Canonical URL:** https://swissclone.com/product/rolex-daytona-116519-btf-blac-dial-diamond-marker/
- **SKU:** SW-27610
- **Price:** $1160 USD
- **Availability:** InStock (48h Digital Timegrapher Video QC Included)
- **Primary Macro Image:** https://swissclone.com/wp-content/uploads/2026/09/rolex-daytona-116519-btf-blac-dial-diamond-marker-oysterflex-bt-factory-1-1-super-clone.webp

Put the Rolex Daytona 116519 BTF Blac Dial Diamond Marker Oysterflex on a digital scale next to a boutique example and the numbers match within a fraction of a gram. Machined by BT Factory (BTF) from Solid 904L Oystersteel (Satin & Mirror Finished), this reference pairs a 40MM × 12.2mm (1:1 Case Profile) silhouette with an anti-reflective sapphire crystal that eliminates milky edge distortion. Inside beats the Dandong DD4130 / SH4131 Integrated Chronograph (72-Hour Extended Reserve (28,800 vph)), giving the seconds hand a crisp 28,800 vph (8 ticks per second) sweep.



### Inside the Dandong DD4130 / SH4131 Integrated Chronograph Architecture


Where cheaper builds cut corners on bracelet articulation and rehaut laser etching, BT Factory (BTF) chamfers the underside of every link so the watch drapes naturally across the wrist. The crown threads down onto twin Viton O-ring seals without grit or play, and the dial markers sit dead-center against the minute track under 10x loupe magnification.



### Timegrapher Verification & Hydrostatic Testing



  - 48-Hour Bench Video & Timegrapher Proof: Before your Rolex Daytona 116519 BTF Blac Dial Diamond Marker Oysterflex leaves our studio, we send macro photos and a live Witschi timegrapher video of your exact watch (verifying +/- 2 sec/day rate, 280°+ amplitude, and 0.0–0.2ms beat error) to your WhatsApp or email.

  - Hydrostatic Water-Resistance Test: Caseback and crown gaskets are lubricated and vacuum-tested to 50M–100M.

  - Insured Triangular Courier & 3-Year Warranty: Shipped via DHL / FedEx triangular routing with a 100% customs pass guarantee and 3-year mechanical movement coverage.