Haylou Watch 4S – Technical Specifications

Display

• Screen Size: 1.43-inch AMOLED

• Resolution: 466 × 466 pixels

• Brightness: Up to 1000 nits

• Glass: 2.5D curved, scratch-resistant

Design & Build

• Material: Aluminum alloy rotating crown

• Weight: ~62g (with strap)

• Water Resistance: 1ATM (rain, sweat, hand wash)

Connectivity

• Bluetooth: 5.3

• Compatibility: Android 9.0+, iOS 13.4+

• GPS: 5-system (GPS, BeiDou, GLONASS, Galileo, QZSS)

Battery & Performance

• Battery Capacity: 400mAh

• Battery Life:

  • Up to 18 days (basic mode)

  • Up to 10 days (daily use)

  • Up to 26 hours (GPS mode)

• Charging: Magnetic charger

Health & Fitness Tracking

• Heart Rate Monitoring: 24/7

• Blood Oxygen (SpO2) Monitoring

• Sleep Tracking (deep, light, REM)

• Stress Monitoring

• Menstrual Cycle Tracking

• 120+ Sports Modes

Smart Features

• Bluetooth Calling (answer/reject calls)

• Voice Assistant

• Notifications (calls, SMS, apps)

• Remote Camera Control

• Custom Watch Faces (200+ options)

• Find My Phone/Watch

Additional Features

• Sedentary Reminder

• Breathing Exercises

• Weather Forecast

• Stopwatch, Timer, Alarm

• Do Not Disturb Mode

• Flashlight

Included Accessories

• Replacement strap

• Screen protector

• Magnetic charger

• Quick start guide