NIGHTHAWK TOURBILLON | GREENSpecification 3D Co axial Flying Tourbillon: AST 01 Jewels: 19 jewels Frequency: 21600 vph Feature: 240 Power Reserve Indicator (42 hrs power reserve) Winding: Manual Winding Case Diameter: 44. 5 mm Thickness: 13. 7 mm Material: 316L Stainless Steel Crown: Push In With Double O ring Plating: Grade AA IP BLACK (1. 0 micron PVD) Coating: Multi Layer Anti Fingerprint Coating Lens: Material: Sapphire Crystal Coating: Multi layer Anti reflection Coating

Strap: Genuine Leather with Pilot Design and Quick Release System

Crown: Push In With Double O-ring

Strap: Genuine Leather with Pilot Design and Quick Release System

Jewels: 19 jewels

Max Length Of The Watch Strap: 228 mm

Feature: 240° Power Reserve Indicator

Strap: Stainless Steel Bracelet with Quick Release System

Specification

Movement: Skeleton Automatic

Water Resistance: 10 ATM

Feature: 80 hrs power reserve

Frequency: 28800 vph