1983 Seiko 7548-7000 SQ 150M Quartz

This 1983 Seiko 7548-7000 150 M quartz is a standout piece from Seiko’s respected era of reliable, purpose-built dive watches. Powered by the rock-solid 7548 quartz movement, it delivers precise timekeeping alongside practical features like a bold rotating bezel and rugged 150 m water resistance, making it equally suited for aquatic adventures or everyday wear. With classic early-’80s design DNA and dependable Seiko engineering, this watch embodies functional style and enduring performance. Recently serviced and ready to wear, it’s a great addition for lovers of vintage Seiko and dependable tool watches alike.

Caliber: 7548
Date of Production: 1983
Serial: 3N3433
Movement Action: Quartz
No. Jewels: 7
Date of Service: 2/1/2026
Features: Bi-Directional Bezel, Day-Date
Dial: Black with Green Lume
Crystal: OG Sapphire
Bezel: Uni-Directional
Case: Stainless Steel
Case Back: Screw In
Crown: Screw Down Stainless Steel
Strap: Black Seiko Diver Strap
Buckle: Stainless Steel
Max Wrist Size: 7.75"
Lug to Lug: 46 mm
Case Diameter without Crown: 42 mm
Case Diameter with Crown: 46 mm
Case Thickness: 13 mm