Usage Tips:The battery-powered clock movement has a total shaft length of 0.53 in and a thread length of 0.22 in, suitable for clock panels less than 0.11 in thick Easily set the chime with the "SET" button, advancing by one hour per press. Choose from 4 sound options: a simple strike chime or three with a melody followed by strikes. The chime activates hourly from the next full hour after setup Volume is adjustable via a rotary knob, ensuring the perfect sound level. The clock defaults to 6:00 AM upon battery insertion, with an automatic silent mode from 10:00 PM to 5:59 AM, so you can enjoy peaceful nights This clock movement kit with chime features a quartz clock motor with a quiet sweeping movement, ensuring precise timekeeping and low power consumption. Note: Hands are made of aluminum, and excessive pressure during installation may cause bending, which can affect the accuracy of the movement The musical clock movement mechanism parts are great for repairing, replacing, or creating vintage grandpa clocks. This chiming clock movement repair set is suitable for home, office, living room, hotel, club, bar, etc Colour:Black Material:Metal+Plastic Package Contents: 1 * battery clock replacement mechanism Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.