Caliber Number: V157
Movement Type: Solar
Precision: ±15 seconds per month
Power reserve: Operating for approx. 10 months (when fully charged)
Jewels: 2
Functions:

• Overcharge prevention function
• Quick-start function
• Date display

Case Material: Stainless steel
Case Size:

• Thickness:10.7mm
• Diameter:42.8mm
• Lug-to-lug:49.2mm

Crystal: Sapphire crystal
LumiBrite: LumiBrite on hands, index(es) and bezel
Band Material: Silicone
Bracelet Length: 205.0mm
Distance between lugs: 20

Other Details:

• Water Resistance: 200m / 660ft diver's
• Magnetic Resistance: 4,800 A/m
• Weight: 93.0gr

Features:

• Unidirectional rotating bezel
• Screw-down crown
• Screw case back