Caliber Number: 4R39
Movement Type: Automatic with manual winding
Power reserve: Approx. 41 hours
Jewels: 24

Functions:
- 24-hour hand
- Stop second hand function

Case Material: Stainless steel
Case Size:
- Thickness: 12.5mm
- Diameter: 41.8mm
- Lug-to-lug: 48.4mm

Crystal: Dual-curved sapphire crystal
Clasp: Deployment clasp with push button release
Distance between lugs: 20

Water Resistance: Splash Resistant
Magnetic Resistance: 4,800 A/m
Weight: 132.0

Features:
- See-through & Screw case back