Seiko Caliber 5K65
Seiko Caliber 5K65

Seiko Caliber 5K65

Manufacturer Seiko
Caliber Number 5K65
Movement Type Quartz, solar-powered
Diameter
Unconfirmed
Height
Unconfirmed
Jewel Count
3
Frequency
32,768Hz
Accuracy Rating
+/- 15 seconds/month
Power Reserve
About 9 months on a full charge
Driving System
Step motor
Integrated Circuit
C-MOSIC driving circuit, frequency divider, oscillator
Hand Count 4
Functions Central hours; central minutes; central seconds; central GMT hand; date at 3:00
Hacking Seconds?
Yes
Country of Manufacture Japan
Known Models
Seiko SFK Diver’s GMT (Add your watch to the comments below…)

The Seiko caliber 5K65 is a solar-powered quartz movement with a GMT complication and a date.

Quick FAQ:

Can this movement be overcharged?
No. The cal. 5K65 has an overcharge prevention function.

Does this movement take a battery?
It has a rechargeable battery, commonly referred to as a “capacitor” or “secondary battery” in the watch world. Do not attempt to fit a regular watch battery in this movement.

How long will it run on a full charge?
About 9 months.

How long does it take to fully charge?
Between 15 hours and 190 hours, depending on the light source used. For best results (and the shortest time to charge), place the watch in direct sunlight on a bright and clear sunny day. Do not let the watch get too hot from the sunshine or it can damage the dial or solar cell.

Additional Resources:

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