Description - Scuba Master Depth Meter

A proper wrist-mounted dive instrument: titanium Scuba Master with an analogue depth computer, max-depth memory, dive log recall, and a single-time alarm. A monster with functional capacity to deal with all your recreational diving needs and more! All titanium model with original titanium bracelet, this light weight beast comes with extra links and new pressure seals

Overview

• Model / case code: Seiko 7K52-6A00 (c caseback photographed)
• Serial number: 550196 (May 1999) 
• Movement: Seiko analogue quartz cal. 7K52 with depth sensor
• Case/bracelet: Titanium case and bracelet
• Service: Serviced Jan 2026 — new seals + new 3023.5MY energy storage unit (capacitor) fitted
• Running condition: [running well / holds charge / time relay works]
• Included: [watch with original bracelet and extra links]

• Crystal: Clean
• Case: Moderate wear
• Dial/hands/lume: All in great condition, lume bright
• Crown: Screw down crown

Measured specifications

• Case diameter (excluding crown): 45
• Thickness: 14 mm
• Lug-to-lug: 47 mm
• Lug width: 20 mm

Movement / functions

• Timekeeping: [OK]
• Date: [OK]
• Depth measurement: [OK] (depth hands respond)
• Max depth memory: [OK]
• Dive time hand: [OK]
• Log data recall: [OK] 
• Second time zone: [OK]
• Alarm: [OK]

About this model 

The 7K52 Scuba Master is not a decorative “dive style” watch, it’s an analogue depth-sensing instrument designed for recreational (no-decompression) scuba in seawater, with depth measurement, warnings, and log recall functions described directly in Seiko’s documentation. Collectors often describe the SBCP001 as a landmark “analogue depth computer” diver from the mid-1990s