Rotary Seamatic Watch - 40mm - Brown

No, the Rotary Seamatic 100 is an automatic watch. It is powered by the movement of your wrist and does not require a battery. It can also be manually wound.

The Miyota 8215 movement is known for its reliability. Typically, it maintains accuracy within a range of -20 to +40 seconds per day, which is standard for automatic movements in this class.

Yes, with its 100m water resistance rating and screw-down crown, the Seamatic 100 is suitable for swimming and showering. However, it is not recommended for deep-sea diving.

The lug-to-lug measurement for this watch is 47mm, contributing to its balanced wearability on the wrist.

Yes, the watch features a sapphire crystal, which is highly resistant to scratches, ensuring clarity and durability over time.

To care for the leather strap, avoid prolonged exposure to moisture and direct sunlight. You can clean it with a soft, dry cloth and condition it periodically if needed.

The case diameter is 40mm, providing a versatile size that suits many wrist types.

Ensure the watch has been wound sufficiently. If worn daily, try shaking it gently for 30 seconds. If the issue persists, the power reserve may be depleted, and it might need manual winding or continuous wear.

Minor variations are normal for automatic movements. If significant timekeeping issues arise, it may require a service. Avoid exposing the watch to strong magnetic fields, which can affect accuracy.

If you suspect water has entered the watch, do not operate the crown. Dry the exterior immediately and take it to a qualified watchmaker for inspection and repair as soon as possible to prevent further damage.

The brown leather strap can be replaced with any standard 20mm watch strap. Consider alternatives like nylon or rubber for more active use.