Nice, works perfectly!
Nothing complicated, which I like. Tracks my workouts and the band feels comfortable.
1-Year Warranty
CE & FCC Certified, RoHS Compliant
✅ 24/7 Health Monitoring & Fitness Tracking: The CFY E51 Smart Watch tracks your health with ECG, Heart Rate, Blood Glucose, Blood Pressure, Blood Oxygen, Body Temp, Sleep Monitoring, and HRV. Plus, it includes Female Menstrual Cycle tracking, Message Reminders, Bluetooth Music, Wake-up Gesture, 60+ APP Dials, and alerts for Abnormal Heart Rate, High Body Temperature, and Sleep Analysis—everything you need to stay connected and healthy.
❤️ Dynamic ECG + PTT Monitoring: Supports ECG collection and PTT dynamic ECG testing through the app, helping you review heart rhythm data during daily use.
🔆 24/7 Heart Rate Monitoring helps you check your heart rate throughout the day and view records and alerts in the app.
🩺 Multiple Health Tracking Functions: Supports heart rate, blood oxygen, blood pressure, body temperature, HRV, sleep monitoring, and blood glucose display for daily wellness reference.
🌙 Sleep Monitoring and Analysis helps track sleep duration, deep sleep, light sleep, and sleep quality, with sleep reports available in the app.
👣 Step, Calorie, and Multi-Sport Tracking helps record daily steps, calories, distance, and sports data such as walking, running, cycling, hiking, and more.
🖥 1.83" HD Color Screen with raise-to-wake support and 60+ app watch faces, so you can customize the display to match your style.
📱 Bluetooth 5.1 Compatible with iOS 8.0 and above and Android 4.4 and above. Supports message reminders, Bluetooth music control, and app data sync.
💧 IP67 Water Resistance with a tempered glass screen, zinc alloy case, and silicone strap for everyday wear.
🔋 185mAh Battery Capacity with about 15 days standby time and about 2 hours charging time, depending on usage habits.
✔ Practical Daily Features include female cycle tracking, sleep reports, and health data review in the companion app.
🎁A thoughtful gift for everyone – from men and women staying active to seniors who need extra care. It offers daily health tracking and peace of mind knowing your loved ones are safe.

| Compatible Phone Models (System) | Android 4.4+ and iOS 8.0+ |
|---|---|
| Case Material | Zinc Alloy |
| Band Material | Silicone |
| Water Resistance Level | IP67 Waterproof |
| Metrics Measured | ECG / PTT / Blood Glucose / Heart Rate / Blood Pressure / Blood Oxygen / Body Temperature / Sleep / HRV |
| Additional Features | Female Menstrual Cycle / Message Reminder / Bluetooth Music / Wake-up Gesture / 60+ APP Dials / Abnormal Heart Rate Warning / High Body Temperature Warning / Sleep Analysis |
| Sport Type | Multi-Sports Mode / Running / Cycling / Indoor Walk / Hiking / Stair Stepper / Outdoor Cycle / Stationary Bike |
| Interface Input | Buttons / Touchscreen |
| Supported Application | H Band |
| Screen Size | 1.83 Inches |
| Display Type | HD |
| Shape | Square |
| Connectivity | Bluetooth 5.1 |
| Case Diameter | 37 mm |
| Battery Power | 185 mAh |
| Battery Average Life | 15 Days Standby |
| Gender | Unisex |
| Item Weight | 47 g |
| Item Dimensions | 51 x 37 x 11 mm |
| Charge Time | 2 Hour |
| Wrist Size | 160-225 mm |
A: It works with most smartphones running iOS 8.0+ and Android 4.4+ via Bluetooth 5.1 and the companion app.
A: You can track daily activity and sleep, check heart rate and wellness data, receive notifications, control music, and sync everything to the app.
A: Small differences may occur due to fit, movement, skin contact, and sync timing. Wearing the watch snugly and syncing regularly can help improve consistency.
A: No. It is designed for general wellness and daily reference only and is not intended for medical use, diagnosis, or treatment.
A: It is rated IP67 for everyday splashes such as handwashing. Standby time can reach up to about 15 days depending on usage, and a full charge takes around 2 hours.
Official certification documents supporting wireless compliance, material safety, and everyday consumer use.
Official authorization for wireless device compliance in the United States.
View Official Certificate
Verified compliance with EU wireless and safety standards for connected devices.
View Official Certificate
Material safety standard supporting restricted substance compliance for everyday consumer use.
View Safety Report