Caliber Number: H855
Movement Type: Solar
Accuracy: ±15 seconds per month
Functions:

• Power save function
• Alarm function (daily alarm)
• Full-auto calendar correct to the December 31, 2100
• LED (the built-in illuminating light) function

Case Material: Stainless steel
Case Size

• Thickness: 14.2mm
• Diameter: 46.9mm
• Lug-to-lug: 50.9mm

Crystal: Hardlex
LumiBrite: LumiBrite on hands, index(es) and bezel
Clasp: Three-fold clasp with push button release
Lug width: 22

Other Details: 

• Water Resistance: 200m / 660ft diver's
• Magnetic Reluctance: 4,800 A/m
• Weight: 184.0gr

Features:

• Unidirectional rotating bezel
• Screw-down crown
• Three-fold clasp with secure lock
• Screw case back