PRODUCT SPECIFICATIONS

Understanding the full technical specifications of the Redmi Watch 3 Active helps users appreciate the engineering and design considerations that contribute to its performance, reliability, and overall value. This page provides a detailed overview of the watch’s hardware, connectivity, sensors, software support, and durability ratings.

1. Design & Display

The Redmi Watch 3 Active features a 1.83-inch LCD screen with a resolution of 240 × 280 pixels, providing sharp clarity for notifications, apps, and health data. The screen supports up to 450 nits of brightness, allowing users to view information comfortably even under direct sunlight. The display uses a 2.5D curved glass protective layer that enhances durability and adds a smooth, premium finish to the watch face.

Its body measures approximately 46.94 × 38.88 × 10.94 mm and weighs around 41.67 grams (with strap). This lightweight build ensures comfortable all-day wear, suitable for both workouts and sleep tracking. The frame is made from durable polymer materials, achieving a balance between strength and flexibility.

2. Connectivity & Compatibility

The Redmi Watch 3 Active supports Bluetooth 5.3, delivering a stable wireless connection for calls, notifications, and real-time synchronization with your smartphone. Low-energy Bluetooth technology helps prolong battery life without compromising performance.

The watch pairs with smartphones running:

• Android 6.0 or later
• iOS 12 or later

Users are required to install the Mi Fitness (Xiaomi Wear) app to access advanced settings, synchronize health metrics, personalize watch faces, and manage system updates.

3. Sensors

A major advantage of the Redmi Watch 3 Active is its array of built-in sensors that work together to provide seamless health and fitness tracking. The watch includes:

• Optical Heart Rate Sensor
  Tracks real-time heart rate, resting heart rate, and heart rate variability.
• Blood Oxygen (SpO₂) Sensor
  Measures blood oxygen saturation levels with advanced LED technology.
• 3-Axis Accelerometer
  Detects movement patterns for step tracking, workout detection, and motion-based interactions.
• Sleep Monitoring System
  Uses combined sensor data to evaluate sleep stages—light, deep, and REM—and provides insights on sleep quality.

These sensors operate continuously yet efficiently, ensuring accurate monitoring with minimal power consumption.

4. Battery & Charging

The watch is equipped with a 289mAh battery, capable of providing:

• Up to 12 days of typical use
• Up to 8 days of heavy use
• Continuous exercise tracking for extended sessions

Actual battery life may vary based on screen brightness, Bluetooth calling frequency, workout duration, and notification volume.

Charging is done using a magnetic charging cable that attaches securely to the charging pins on the back of the device. A full charge typically takes around 2 hours.

5. Durability & Water Resistance

The Redmi Watch 3 Active comes with a 5ATM water resistance rating, meaning it can withstand water pressure equivalent to 50 meters. This makes it suitable for swimming, showering, and everyday exposure to water. However, it is not recommended for high-speed water sports or diving.

The watch is also designed to resist dust, sweat, and minor impacts, making it suitable for daily wear and fitness activities.

6. Health & Fitness Features

The smartwatch supports more than 100 workout modes, including:

• Running
• Cycling
• Swimming
• Yoga
• Walking
• HIIT
• Strength training

The system automatically detects basic activities like walking and running. Throughout your workouts, the watch monitors:

• Heart rate zones
• Calories burned
• Distance traveled
• Activity duration

The Mi Fitness app provides detailed analysis, historical data, and goal-based insights to help users build healthier routines.

7. Smart Features

Beyond fitness tracking, the Redmi Watch 3 Active offers a variety of smart utilities, including:

• Bluetooth Calling with built-in microphone and speaker
• Incoming call alerts & message notifications
• Music playback control
• Weather updates
• Alarm, Timer, Stopwatch
• Find My Phone
• Flashlight
• Do Not Disturb mode
• Sedentary reminders

These features create a smooth, connected user experience that enhances productivity and daily convenience.

8. Customization Options

Users can personalize their watch through:

• Over 200 custom watch faces
• Editable complications
• Detachable and replaceable straps
• Custom notifications and alerts

This flexibility ensures the watch adapts to your style—whether sporty, professional, or casual.

9. System Software

The Redmi Watch 3 Active runs on an optimized real-time operating system (RTOS) built for efficiency, speed, and low power consumption. This lightweight OS ensures smooth scrolling, fast app loading, and reliable performance even with continuous tracking.

The system also receives over-the-air (OTA) firmware updates through the Mi Fitness app, ensuring long-term stability and access to new features.