For any unresolved error, perform a (System > Factory Reset > Confirm). This erases all user data.
Email: support@r5639.com (example) Phone: 1-800-555-0199 (example) R5639 User Manual
The R5639 uses a backup supercapacitor; time will be retained for up to 7 days without main power. For any unresolved error, perform a (System >
End of the R5639 User Manual.
The most common consumer product with this model number is a universal TV remote. For any unresolved error
If you prefer not to use the smartphone link, you can set the watch manually:
Incorrect calibration cannot be undone automatically. Record original values before adjusting.