Seiko 4R36
In-houseCaliber ref: 4R36
Seiko
Seiko 4R36
Movement image needed
Technical Specifications
Type
automatic
Display
analog
Jewels
24
Power Reserve
41h
Frequency
6.0 Hz / 21600 vph
Movement Truth
Seiko 4R36 is a genuine Seiko in-house movement produced at their Shizukuishi Watch Studio. It includes a hacking mechanism and hand-winding capability. Accuracy is typically +/- 15 seconds per day as tested — Seiko does not COSC certify this caliber but it performs within reasonable expectations for the price.
Serviceability
Seiko's after-sales service for modern 5 Sports models is affordable. The movement can be serviced by Seiko-trained watchmakers and some knowledgeable independents. Parts availability is good through Seiko's service infrastructure.
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