Seiko 150m Automatic Diver

This caliber 6309 Slim Case Turtle has been fully restored with a movement service and new case seals. It is the non hacking version of the 63xx series movement and is utterly utilitarian. Shake-to-wind, as it is automatic only. The Dial is clean and original with only some small bits of eroded lume about the markers. The hands tarnished and the lume is discolored around the borders but has been kept original nonetheless. The bezel is bidirectional and clicks freely. The insert is warn but not terribly. The crystal is flat with a polished bevel. This 6309 Slim Turtle certainly has vintage character but has been serviced and is ready to be worn again.

Vintage Seiko divers are quite large compared to a standard three-hander watches however the lug-to-lug is compact making it wear well, even for those with thinner wrists. Additionally, the Slim Case variant is the smallest of the full sized divers .

• Replica Crystal, Same dimension as the original with a Polished Beveled edge

• Replica non-OEM Seiko Z22 strap

• 42mm Case Width

• 45mm Lug to Lug

• 22mm Lug Width

• 13mm Height

• 21,600 Beats Per Hour

• 21 jewels

• Automatic Only

• Quickset Day and Date

• Non Hacking

• English and Kanji

• 31.5mm Replica Flat Mineral Crystal

• 4 O'Clock Crown

• Screwdown

• Suwa-Seikosha

Average Deviation:

(+) 7 s/d, 0.1 ms., 191 deg