Seiko Prospex Marinemaster Mechanical Automatic Professional Diver 300M "Gold Seconds MM300"
SLA 021
(JDM Model: SBDX 023)
SLA021 (SBDX023) Specifications:
Movement
Caliber: 8L35
Movement Type: Automatic with manual winding capacity
Accuracy: +15 to -10 seconds per day
Power Reserve: Approx. 50 hours
28,800 vibration/hour
Antimagnetic
Exterior:
Case Material: Stainless steel (super hard coating) with stainless steel bezel
Crystal: Sapphire
Crystal Coating: Anti-reflective coating on the inner surface
LumiBrite: Lumibrite on hands and indexes
Other Details
Water Resistance: 300m / 1000ft for saturation diving
One-piece structure
Screw-down crown
Three-fold clasp with secure lock
Unidirectional rotating bezel
26 Jewels
Date display
Stop-seconds hand function
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