(1) First, inspect the appearance: the color of the clock case is bright and uniform, without peeling, discoloration, or scratches. The clock face should be clean, with even scales and clear handwriting.

(2) Check sensitivity: Slightly start the winding and the second hand will start moving, proving high sensitivity. A clock with high sensitivity has a longer duration of travel.

(3) Check the sound when walking: Place the clock face on the left, right, front, back, up, and down. If the sound is consistent in all directions and uniform without any noise, it indicates that the walking is normal.

(4) Check for contact with the hands: Move the hour and minute hands to make them coincide with the second hand (three hands overlapping), and maintain a certain gap between the three hands without touching. At the same time, there should also be appropriate gaps between the needle, clock face, and glass.

(5) Check the alarm: Set the alarm surface to positions 3, 6, 9, and 12 respectively, and then move the time minute needle to these positions. If the alarm error is within 5 minutes, the alarm is considered normal.

(6) Check the alarm sound; The sound of the alarm should be clear and loud, without hoarse or empty sounds.

(7) Check the tightness of the needle and alarm keys: the tightness should be moderate. If the needle key is loosened, it indicates that the spring force on the center wheel is insufficient, which can cause the second hand to move but the minute hand to not move or move slowly. If the alarm key is loosened, the alarm panel will rotate with the minute hand. But if it's too tight, it's not convenient to use.