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Seiko Caliber 1M20

Technical information

watch movement technical informationwatch movement technical informationwatch movement technical informationwatch movement technical informationwatch movement technical informationwatch movement technical informationwatch movement technical informationwatch movement technical informationwatch movement technical informationwatch movement technical information

Watches with the 1M20 movement

1M20-0A10
1M20-0A20
1M20-0A30
1M20-0A40
1M20-0A50
1M20-0A60
1M20-0A70
1M20-5A00
1M20-5A10
1M20-5A20
1M20-5A30
1M20-5A40
1M20-5A50
1M20-5A60
1M20-5A70
1M20-5A80
1M20-5A90
1M20-5B00

About “The Seiko Guy”

Hey, nice to see you here!
My name is Andrea Secco, I’m a watch enthusiast and a Seiko collector.
I hope this website will be useful to all of you who share this passion.

Andrea Secco

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Recent Posts

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The latest Seiko Quartz I’ve added to my collect The latest Seiko Quartz I’ve added to my collection. A beautiful watch from the 38 family, dating back to the first half of the 1970s, featuring a stunning “Snowflake” dial. It houses a spectacular movement, often overlooked by those who don’t truly understand watches, simply because it falls into the quartz category. These models were positioned above most Grand Seikos of their time, and this was reflected in both their build and finishing quality, as well as their price. #seiko #watches #seikowatch #vintageseiko #seikoquartz #luxurywatch #grandseiko #watchfam
Seiko pre-WW2 ladies wristwatches in solid gold. M Seiko pre-WW2 ladies wristwatches in solid gold. Manual winding 5-ligne movements. #seiko #vintageseiko #seikosha #watches #seikowatch
Vintage Seiko Quartz #watches #seiko #grandseiko Vintage Seiko Quartz #watches #seiko #grandseiko #seikoquartzastron #quartzastron #35sq #grandquartz #twinquartz #vintageseiko #watchcollector
Seiko McDonald’s commemorative watch. #seiko #w Seiko McDonald’s commemorative watch. #seiko #watches #seikowatch #mcdonalds #japan #vintageseiko
Seiko Wena “Premium Black” 300 Limited Edition Seiko Wena “Premium Black” 300 Limited Edition. Mechanical watch head, electronic smart bracelet. This watch is part of a variety of Slim Case models that Seiko introduced shortly before the launch of the new 5 Sports series. #seikowatch #seikowena #seiko #slimcase #slimturtle #seiko5sports #seikofamily #watchesofinstagram
Grand Seiko Toshiba (5641-7000) and Idemitsu (5645 Grand Seiko Toshiba (5641-7000) and Idemitsu (5645-7000) commemorative editions. #grandseiko #seiko #watches #grandseikowatches #hibeat #vintagegrandseiko #theseikoguy #watchcollector
Seiko MarineMaster 300 Hi-Beat and Naomi Uemura. Seiko MarineMaster 300 Hi-Beat and Naomi Uemura. #seiko #seikomarinemaster #mm300 #seikowillard #naomiuemura #seikodiver #prospex #seikofam #watchcollector
Seiko 62MAS ref. SBDX019 with automatic caliber 8L Seiko 62MAS ref. SBDX019 with automatic caliber 8L35. The first re-creation of the 62MAS, from 2017. Mr. Gethin Christian’s review made me appreciate even more some of the finer details of this watch, which is truly stunning in person, especially the dial. Check his channel and also @mr_seikosha on Instagram! #seiko #62mas #seikodiver #seiko62mas #prospex #seikoholic #watchaddict #watches
Seiko Presmatic Hi-beat #vintageseiko #seikowatch Seiko Presmatic Hi-beat #vintageseiko #seikowatch #seiko #presmatic #seikomatic #watches #seikocollector
Seiko 5 Sports #seiko5sports #seikofive #seiko5 # Seiko 5 Sports #seiko5sports #seikofive #seiko5 #seikowatches #seiko #watches #vintageseiko #mechanicalwatch #watchesofinstagram
Yes. #seiko #seikowatches #seiko5sports #seikofiv Yes. #seiko #seikowatches #seiko5sports #seikofive #seikofam
Seiko Goldfeather J14060 #seiko #dresswatch #vint Seiko Goldfeather J14060 #seiko #dresswatch #vintageseiko #seikosha #seikogoldfeather #manualwindingwatch #seikowatch #watches
Seiko Motorist vintage manual winding watch. #sei Seiko Motorist vintage manual winding watch. #seikowatch #seiko #watchesofinstagram #vintageseiko #seikocollector #watches #seikomotorist #manualwindingwatch
Ninja Turtle and Mini Turtle, Seiko diver’s 200 Ninja Turtle and Mini Turtle, Seiko diver’s 200 m Limited Editions. #seikoturtle #seikodiver #seikominiturtle #seikowatch #watchcollector #seikoholic #diverwatch #seiko #watches
King Seiko 5626-5030, one of the first Seiko watch King Seiko 5626-5030, one of the first Seiko watches in history with a sapphire crystal. #kingseiko #watches #seiko #seikowatch #vintageseiko #watchcollector
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This website is the work of a watch enthusiast and a collector of Seiko and Grand Seiko timepieces, and it is not affiliated with Seiko in any way.

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