Rolex brand

GMT-2 Series

3186 movement model

40mm dial

Steel case material

Basic Information Number: 116713-LN-78203 Brand: Rolex Series: GMT-Master II Gender: Men’s Movement: Movement Model: 3186 Manufacturer: Unknown Frequency: 28,800 vibrations per hour Power Reserve: 48 hours Technical Certification: Swiss Official Chronometer Testing Institute (COSC) Appearance: Case Diameter: 40mm Case Thickness: 12mm Dial Color: Black Dial Shape: Round Strap Color: Two-tone Clasp Type: Folding Clasp Case Back: Solid Weight: Not available Water Resistance: 100 meters Hour Marker Type: Not available Clasp Spacing: Not available Lug Spacing: Not available Materials: Case Material: Steel Dial Material: Not available Bezel Material: 18k Gold Crystal Material: Sapphire Crystal Crown Material: Not available Strap Material: Gold and Steel; Two-tone Clasp Material: 18k Gold and Steel Functions: Date Display, GMT Thanks to the helpful user visail for correcting these product parameters.