1. Do not use strong alkaline battery or rechargeable battery for wall clock/alarm clock, so as not to damage the movement. Please use a carbon battery.2. Simple round small potassium pole, high-quality plastic outer frame, metal pointer, pvc clock face; Good quality Kangbashi silent movement The quality of movement determines the service life of wall clock.3. Tips for alarm setting: The first step is to set the alarm time to 7:30 if you want to make an alarm at 7:30 in the morning; Step 2, turn the alarm pointer counterclockwise, slow down when the pointer approaches the hour hand, and stop when you hear a click; The third step is to set the time back to the normal time.4. Test whether the alarm setting is accurate: turn the hour hand clockwise once to test whether the alarm goes off at the set time. If it goes off early, fine-tune the alarm pointer backwards; if it goes off late, fine-tune the alarm pointer forwards until the alarm is accurate.