HAYLOU Watch 4 – Full Technical Specifications

Display & Design

• Screen Size: 1.93-inch TFT LCD
• Resolution: 320 × 380 pixels (HD)
• Touchscreen: 2.5D curved glass
• Bezel: Ultra-thin design
• Crown: Rotating for navigation
• Dimensions: 47.6 × 38.8 × 11.8 mm
• Weight: 45g (including strap)
• Strap Material: Silicone (interchangeable)

Connectivity

• Bluetooth Version: 5.3

• Compatibility: Android 9.0+, iOS 13.0+

• GPS Support: BDS, GPS, Galileo, GLONASS, QZSS

• Sync Apps: Haylou Fun, Strava

Health & Fitness Tracking

• Heart Rate Monitoring: 24/7 tracking with alerts

• Blood Oxygen (SpO2): Real-time monitoring

• Sleep Tracking: Deep, light, REM analysis

• Stress Monitoring: All-day stress levels

• Menstrual Cycle Tracking: Fertility & period logging

• Activity Tracking: Steps, calories, distance

• Sports Modes: 120+ (running, cycling, swimming*, hiking, etc.)

• Water Resistance: IP68 (rain & sweat-proof, not for swimming)

Smart Features

• Bluetooth Calling: Make/answer calls directly
• SOS Emergency Call: Quick emergency contact alert
• AI Voice Assistant: Voice commands for calls, weather, etc.
• Notifications: Calls, SMS, app alerts (WhatsApp, Facebook, etc.)
• Music Control: Play/pause/skip tracks
• Remote Camera Control: Shake to take photos
• Find My Phone/Watch: Anti-loss feature

Battery & Performance

• Battery Capacity: 380mAh

• Battery Life:

  • Daily Use: ~7 days (typical mode)

  • Basic Mode: Up to 15 days

  • GPS Mode: ~24 hours

• Charging: Magnetic charging cable

Additional Features

• Watch Faces: 100+ (customizable & downloadable)
• View Modes: 8 layout options (list, grid, honeycomb)
• Widgets: Quick access to weather, health stats, etc.
• Games & Tools: Stopwatch, timer, calculator, flashlight
• Do Not Disturb Mode: Customizable settings
• In the Box

• HAYLOU Watch 4

• Magnetic charging cable

• User manual

Notes

• *Swimming not recommended despite IP68 rating.

• Battery life varies based on usage settings.