Seiko Superior x Mechanical ft. Emergency Signal

Caliber Number: 4R37

Movement: Automatic with manual winding capacity

Power Reserve / Accuracy: Approximately 41 hours (+45 to -35 seconds per day)

Crystal: Hardlex crystal

LumiBrite: Lumibrite on hands and indexes

Case & Band Material: Stainless steel case with metal band

Clasp: Three-fold clasp with secure lock, push-button release

Water Resistance: 100m / 10 bar

Case Size:
- Thickness: 13.3 mm
- Diameter: 45.0 mm
- Length: 50.0 mm

Other Specifications:
- LIMITED EDITION on the case back
- Serial number engraved on the case back
- Ground to air emergency signal code
- Bidirectional rotating compass bezel
- See-through case back
- Screw case back
- 24 jewels
- Date and 24-hour display
- Stop second hand function (hacking mechanism)
- Regular timekeeping (analog display)