The Carelders F520 Smartwatch is designed around three core health functions: blood glucose monitoring, ECG monitoring, and air pump blood pressure monitoring. It also supports HRV, SpO2, heart rate, sleep tracking, SOS, fall alert, remote care, and daily activity features.

The F520 supports blood glucose monitoring, helping users follow glucose trends through the watch and app. This function is intended for daily health reference and is not a medical diagnostic tool.

With ECG monitoring, the watch can record ECG waveform data and display heart-related readings such as heart rate, HRV, and ECG waveform reports through the app.

The AI ECG analysis section helps present ECG-related risk references in a clearer format, making heart health data easier to review in the app.

The F520 uses air pump blood pressure monitoring with an inflatable airbag strap structure, designed to measure blood pressure with a pressure-based method.

The detachable airbag strap supports blood pressure measurement and can be removed when not needed for daily wear.

The built-in pressure sensor and air pump structure work together to support more standardized blood pressure monitoring.

The watch provides measurement posture guidance for blood pressure testing, helping users keep the wrist and body in the correct position during measurement.

The F520 supports voice broadcast for blood pressure results, allowing users to hear measurement guidance and recorded results during use.

The one-click micro-checkup screen combines multiple health indicators, including blood glucose, blood pressure, heart rate, blood oxygen, stress, and body temperature.

The watch supports red light blood oxygen monitoring, helping users view SpO2 data and related app records.

The hypoxic arousal function can provide an alert when low blood oxygen is detected during sleep, after automatic blood oxygen monitoring is enabled in the app.

The F520 supports automatic sleep stage monitoring, including sleep duration, deep sleep, light sleep, REM sleep, and wakefulness records.

With HRV monitoring, the watch can record heart rate variability data and provide related app reports for daily heart health reference.

The EDA electrodermal detection function displays skin hydration, sentiment status, cortisol reference, sympathetic activity, and related stress information.

The watch supports continuous heart rate monitoring through the built-in PPG sensor system.

The four-channel detection system supports heart rate, blood oxygen, exercise, and other physiological indicator tracking.

The F520 supports SOS emergency call settings through the app, allowing users to add emergency contacts in advance.

The fall detection function can trigger an emergency prompt after a detected fall. This feature may have misjudgments and should not be fully relied on.

Remote care allows family members to view shared health data through the app after permission is enabled.

The watch supports mobile payment code display, depending on app and regional support.


Multiple sport modes are available for daily exercise tracking.

The F520 includes multiple watch faces, allowing users to switch styles based on preference.

The 2.10-inch display with 320 × 385 resolution provides a clear screen for viewing health data, time, and daily functions.

Product parameters:
- Product Type: F520
- PPG Sensor Chip: TI4950 4-channel version
- CPU: JL7013A7 + 128Flash
- Micro Air Pump: Murata
- Screen Resolution: 320 × 385
- Screen Size: 2.10 inch
- Charging Method: USB Magnetic
- Battery Capacity: 400mAh
- Compatible Systems: iOS 13.0 and above / Android 8.0 and above
- Battery Life: 10–12 days
