There are a few different types of Seiko wall clocks, so the instructions for setting the time will vary depending on the model.
For quartz clocks, there are knobs on the side of the clock to adjust the timing. For pendulum clocks, there is usually a key on the back of the clock, simply insert the key into the slot and turn it until the hands are pointing to the correct time. Finally, for vintage wall clocks with chiming features, there may be an adjustment lever located on the side of the clock. Moving this lever up or down will change how often the clock chimes throughout the day.
Ultimately, no matter what type of Seiko wall clock you may have or wish to own, following these general instructions will help you keep it running accurately. If you are still unsure, be sure to contact the experienced staff of CityChain Singapore for professional help and advice.