Introduction
This manual provides essential instructions for the setup, operation, and maintenance of your Seiko QXM450BRH Melody in Motion Clock. Please read this manual thoroughly before using the clock to ensure proper function and longevity.
The Seiko QXM450BRH is a unique wall clock featuring a quartz movement, a selection of hi-fi melodies, and a captivating motion display with LED lights and rotating elements. Its design includes polished multicolor metal musician figurines, polished silver-tone metal stars and musical notes, and a rotating pendulum with Swarovski crystals, all housed within a matte silver-tone metallic case with cherry wood panels.
Package Contents
- Seiko QXM450BRH Melody in Motion Clock
- 4 x "D" Batteries
- Instruction Manual (this document)
Setup
1. Battery Installation
- Locate the battery compartment on the back of the clock.
- Open the battery compartment cover.
- Insert four (4) "D" size batteries, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover securely.
2. Time Setting
- Locate the time setting knob or wheel on the back of the clock.
- Rotate the knob/wheel to set the clock to the correct time. Ensure the hour and minute hands are synchronized.
3. Mounting the Clock
The Seiko QXM450BRH is designed as a wall clock. Ensure you use appropriate wall anchors and screws suitable for the clock's weight (approximately 6.51 kg or 14.35 lbs) and your wall material. Mount the clock securely to prevent accidental falls.

Figure 1: Front view of the Seiko QXM450BRH clock with the dial closed, showing Roman numerals and the central Seiko logo. The cherry wood panels are visible on the sides.
Operating Instructions
1. Melody Selection
Your clock offers two sets of hi-fi melodies. Locate the melody selection switch or button on the control panel, typically found on the side or back of the clock. Switch between the "Popular Selection" and "Christmas Selection" as desired.
- Popular Selection: Ain't Nothing Like The Real Thing, How Sweet It Is (To Be Loved By You), Stop In The Name Of Love, You're In My Heart "The Final Acclaim", Touch Me In The Morning, Weekend In New England.
- Christmas Selection: Deck The Halls, O Tannenbaum, We Wish You A Merry Christmas, Joy To The World, Silent Night, Jingle Bells.
2. Hourly Melody and Motion
On the hour, the clock's dial will open to reveal an abstract design, accompanied by one of the selected hi-fi melodies, an opening and closing melody, and ten colorful LED lights. The polished multicolor metal musician figurines, stars, and musical notes will also engage in motion. The rotating pendulum with Swarovski crystals will continuously move.

Figure 2: Front view of the Seiko QXM450BRH clock with the dial open, revealing the intricate abstract design, musician figurines, and other motion elements during melody play.
3. Light Sensor
The clock is equipped with a light sensor. This sensor automatically detects ambient light levels. When the room becomes dark, the clock will cease playing melodies to ensure quiet during nighttime hours. Melodies will resume automatically when sufficient light is detected.
4. Volume Control
Adjust the melody volume using the volume control knob or slider, typically located on the side or back of the clock. Rotate or slide to increase or decrease the sound level to your preference.
5. Demonstration Button
Press the "Demonstration" button (if present) to activate a sample of the hourly melody and motion sequence at any time, without waiting for the top of the hour.
6. On/Off Switch
An On/Off switch is provided to completely disable the melody and motion features while allowing the clock to continue keeping time. This switch is usually located near the battery compartment or control panel.
Maintenance
1. Cleaning
- Case: Wipe the cherry wood panels and metallic case with a soft, dry cloth. Avoid abrasive cleaners or solvents.
- Glass Crystal: Use a soft, lint-free cloth, slightly dampened with glass cleaner if necessary, to clean the glass crystal. Spray cleaner onto the cloth, not directly onto the clock.
- Moving Parts: Do not attempt to lubricate or clean the internal moving parts. Dust can be gently removed with a soft brush or compressed air.
2. Battery Replacement
Replace all four "D" batteries approximately once a year, or when the melodies become faint, the motion slows, or the clock stops keeping accurate time. Always replace all batteries at the same time with new, high-quality batteries. Refer to the "Battery Installation" section for instructions.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Clock does not operate or keeps incorrect time. | Dead or improperly installed batteries. | Check battery polarity and replace all four "D" batteries with new ones. |
| Melodies do not play or motion does not occur. |
|
|
| Pendulum is not rotating. | Pendulum is obstructed or batteries are low. | Ensure nothing is blocking the pendulum's movement. Replace batteries if necessary. |
Specifications
- Model Number: QXM450BRH
- Brand: Seiko
- Movement: Quartz
- Power Source: 4 x "D" Batteries (included)
- Melodies: Two sets (Popular & Christmas), 12 hi-fi melodies total
- Features: Light sensor, Volume control, Demonstration button, On/Off switch, Rotating pendulum with Swarovski crystals, LED lights, Opening/closing dial.
- Case Material: Matte silver-tone metallic case with cherry wood panels
- Dimensions: 19.0"H x 17.75"W x 4.75"D (48.26 cm H x 45.08 cm W x 12.06 cm D)
- Weight: Approximately 6.51 kg (14.35 lbs)
- Glass: Glass crystal

Figure 3: A generic size guide for watches. While this clock is a wall clock, this image provides a general reference for scale in watch products. The actual dimensions of the QXM450BRH are provided above.
Warranty Information
Seiko products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your purchase or visit the official Seiko website. Typically, Seiko offers a limited warranty covering manufacturing defects from the date of purchase.
Please retain your proof of purchase for any warranty claims.
Customer Support
For further assistance, technical support, or inquiries regarding your Seiko QXM450BRH Melody in Motion Clock, please contact Seiko customer service or visit their official website.
You can find more information and contact details by visiting the Official Seiko Store on Amazon.





