Jazzmaster Performer Automatic Chronograph - Black - 42mm

The H-31 automatic chronograph movement has a power reserve of 60 hours.

This watch has water resistance suitable for splashes and brief immersion. It is not recommended for swimming, diving, or prolonged water exposure.

You can manually wind the watch by turning the crown clockwise approximately 40 times while it is in the '0' (fully pushed in) position.

Yes, the watch has standard lug dimensions that typically allow for compatible aftermarket strap replacements.

A chronograph is a function that allows the watch to be used as a stopwatch. It typically includes sub-dials to measure seconds, minutes, and sometimes hours elapsed.

It is generally recommended to have an automatic watch serviced every 3-5 years to ensure optimal performance and longevity of the movement.

The case is made of stainless steel.

Ensure the watch has been worn for a sufficient duration or manually wound. If the issue persists after winding or regular wear, the power reserve may be depleted, or there could be an internal issue requiring service.

Ensure the crown is fully pushed in. If the buttons remain stiff, avoid forcing them. There may be debris or an internal mechanism issue requiring professional cleaning or adjustment.

Ensure you are not setting the date between 9 PM and 3 AM, as this is when the date change mechanism is engaged and can be damaged. Set the time to a neutral position (e.g., 6 AM) before adjusting the date.

Automatic watches can have a daily variance. If the inaccuracy is significant, ensure the watch is fully wound and has been worn consistently. Extreme temperature changes or magnetic fields can also affect accuracy. If deviation is substantial, a service may be required.