Introduction
The Sunding SD 563B is a wired bicycle computer designed to monitor your cycling performance. Featuring a clear LCD display with a green backlight, it tracks essential metrics such as speed, distance, and riding time. This device is a perfect companion for bicycle training, hiking, climbing, riding, and other outdoor activities, making your sports life more informed and comfortable. It is lightweight, durable, and waterproof.

Package Contents
Upon opening the package, ensure all the following items are present:
- 1 x Bicycle Odometer (Sunding SD 563B unit)
- 1 x Magnet
- 1 x Strap
- 1 x Mounting Base
- 1 x English Manual
Setup and Installation
Follow these steps to correctly install your Sunding SD 563B bicycle computer:
- Fasten the Mount: Secure the mounting base onto your bicycle's handlebar.
- Tie the Sensor: Attach the sensor to the front fork of your bicycle.
- Tie the Magnet: Secure the magnet onto a spoke of your front wheel. Ensure the magnet's plane faces the sensor.
- Adjust Sensor-Magnet Distance: Position the magnet's plane near the head or tail of the sensor. The distance between the magnet and the sensor must be less than or equal to 1.5mm for accurate readings.
- Install the Computer: Slide the bicycle computer unit onto the installed mounting base until it clicks securely into place.

Operating Instructions
The Sunding SD 563B features a separated button design for easy navigation. Use the 'MODE' button to cycle through different display modes and the arrow buttons for adjustments.
Functions Overview:
- SPD: Current Speed
- ODO: Odometer (Total distance traveled)
- DST: Trip Distance (Distance for the current trip)
- MXS: Maximum Speed
- AVS: Average Speed
- TTM: Total Trip Time
- TM: Trip Time (Time for the current trip)
- RAT: Riding All Time
- CLK: Clock (12H/24H format)
- SW: Stopwatch
- Temperature: Displays current temperature
- TM UP: Trip time up
- TM DN: Trip time down
- Trip UP: Trip distance up
- Trip DN: Trip distance down
- Sleep Mode: Automatic power-saving mode
- Comparator: Indicates if current speed is above or below average speed
- Maintenance Alert: Reminder for bicycle maintenance
- Machine Oil Reminder: Reminder for lubrication
- Over-speed Reminder: Alerts when a set speed limit is exceeded
- Setting Type Circumference: For wheel circumference calibration
- Low Battery Indicator: Alerts when battery is low
- Auto Green LED Backlight: Automatic backlight for visibility in low light conditions
- Freeze Frame Memory: Records data at a specific moment
- Auto ON/OFF: Automatic power management


Maintenance
To ensure the longevity and optimal performance of your Sunding SD 563B bicycle computer, consider the following:
- Cleaning: The unit is waterproof, so it can be wiped clean with a damp cloth. Avoid harsh chemicals or abrasive materials.
- Battery Replacement: When the low battery indicator appears, replace the battery. The battery compartment is located on the back of the unit. Refer to the diagram for opening and closing.
- Alerts: Pay attention to the 'Maintenance Alert' and 'Machine Oil Reminder' features to keep your bicycle in good condition.
- Storage: When not in use for extended periods, store the unit in a cool, dry place away from direct sunlight.

Troubleshooting
If you encounter issues with your bicycle computer, try the following basic troubleshooting steps:
- No Display/Flickering: Check the battery level. If the low battery indicator is on, replace the battery. Ensure the battery is inserted correctly.
- Inaccurate Speed/Distance: Verify that the sensor and magnet are correctly aligned and the distance between them is within 1.5mm. Ensure the wheel circumference setting is accurate.
- Unit Not Responding: Try removing and reinserting the battery to perform a soft reset.
- Display Issues: If the display is unclear or has missing segments, ensure the unit is securely mounted and connections are firm.
If problems persist, consult the full English manual provided in the package or contact customer support.
Specifications
| Feature | Description |
|---|---|
| Model | SD 563B |
| Type | Wired Bicycle Computer |
| Display | LCD with Green Backlight |
| Dimensions | 5.7 x 4.1 x 2 cm |
| Color | Black |
| Material | Engineering plastic + electronic components |
| Waterproof | Yes |
| Origin | Mainland China |
| Key Functions | Current Speed, Odometer, Trip Distance, Max Speed, Avg Speed, Total Trip Time, Trip Time, Riding All Time, Clock, Stopwatch, Temperature, Trip Time Up/Down, Trip Distance Up/Down, Sleep Mode, Comparator, Maintenance Alert, Machine Oil Reminder, Over-speed Reminder, Wheel Circumference Setting, Low Battery Indicator, Auto Green LED Backlight, Freeze Frame Memory, Separated Button, Auto ON/OFF |
User Tips
- Wheel Circumference: Ensure you accurately measure and input your wheel's circumference for precise speed and distance readings. An incorrect setting is a common cause of inaccurate data.
- Sensor Alignment: Double-check the sensor and magnet alignment periodically, especially after bumpy rides, to maintain the critical 1.5mm gap.
- Backlight Usage: Utilize the auto green LED backlight feature for improved visibility during night rides or in low-light conditions.
Warranty and Support
This product is designed for durability and performance. In case of any issues:
- If the item is damaged or defective upon receipt, please contact the seller within 24 hours.
- For any functional defects or discrepancies with the product description, contact the seller for assistance.
- Keep your purchase records and order ID handy when contacting support.





