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Pre-owned Redmi Watch 4
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Warranty period: 6 months
Redmi Watch 4 – Full-Screen Smartwatch with 100% Official Specs
Discover the stylish and versatile Redmi Watch 4 – a smartwatch strictly adhering to official configurations, featuring a large 1.97-inch AMOLED display, multi-satellite positioning, and comprehensive health and sports tracking. Tailored for users valuing portability, practicality, and long battery life, it delivers reliable performance, convenient connectivity, and all-scenario adaptability, fully aligning with Xiaomi’s official product definition.
🔹 Core Selling Points (100% Matched with Official Specs)
• Large Display Experience: 1.97-inch AMOLED color square screen | 390×450 resolution | 600nits peak brightness + auto-brightness adjustment
• Lightweight & Durable Design: Approximately 31.5g (without strap) | Aluminum alloy middle frame + stainless steel crown
• Comprehensive Positioning: GNSS support for 5 satellite systems (Beidou, GPS, GLONASS, Galileo, QZSS)
• Versatile Connectivity: NFC (multi-scene applications) + Bluetooth 5.3 | Compatible with multi-system devices
• All-Scenario Waterproof: 5ATM water resistance (equivalent to 50m underwater) | Suitable for swimming and shallow-water activities
• Rich Sensors: Optical heart rate & blood oxygen sensor + acceleration/gyroscope/geomagnetic/ambient light sensors
• Long-Lasting Battery: 470mAh lithium-polymer battery | Approximately 85-minute full charge
• Practical Functions: Vibration motor + 150+ sports modes + smart health monitoring (official extended features)
Design & Dimensions (Strictly Official Data)
• Product Model: M2314W1
• Case & Strap:
- Case Material: Aluminum alloy middle frame + stainless steel crown + high-strength fiber polymer
- Strap Material: TPU (soft and skin-friendly)
- Strap Design: Quick-release buttons on both sides (easy to remove and install)
• Color Options (Official Names): Elegant Black, Silver Snow White• Exact Size & Weight:
- Dimensions (L×W×H): 47.58×41.12×10.5mm (excluding heart rate bump)
- Net Weight: Approximately 31.5g (without strap)
• Wrist Fit: 135mm – 205mm (suitable for most wrist sizes)
Note: Actual weight and dimensions may vary by configuration, manufacturing process, and measurement method; please refer to the physical product.
Craft Details (Official Description)
• Display: 1.97-inch AMOLED color square screen | 2D flat glass cover | Full-screen touch operation
• Core Hardware: Built-in vibration motor (for notifications and alerts) | Precision stainless steel crown (for navigation and operation)
• Key Design: Streamlined integrated body, comfortable to wear without pressure | Reserved functional buttons for quick operation
• Protection: 2D flat glass cover (scratch-resistant and wear-resistant) | Sealed design for waterproof performance
Display – Clear & Vivid (1:1 Official Specs)
• Screen Specifications:
- Size: 1.97-inch AMOLED color square screen
- Resolution: 390×450 pixels (clear and detailed image quality)
- Brightness: Up to 600nits (visible in strong outdoor sunlight)
- Key Features: Auto-brightness adjustment (adapts to different light environments) | Full-screen touch (smooth operation)
• Visual Experience: 16.7 million color display (vibrant and realistic colors) | 60Hz refresh rate (smooth page turning and interaction)
Sensors & Health Monitoring (Full Official List)
• Core Sensors:
- Optical Heart Rate & Blood Oxygen Sensor (24/7 monitoring)
- Acceleration Sensor (motion state recognition, step counting)
- Gyroscope Sensor (motion trajectory tracking, sports data analysis)
- Geomagnetic Sensor (compass function)
- Ambient Light Sensor (auto-adjusts screen brightness)
• Health Tracking Functions:
- Heart Rate Monitoring: All-day automatic monitoring + abnormal heart rate alerts
- Blood Oxygen Monitoring: All-day intelligent detection + data visualization
- Sleep Monitoring: Analyzes sleep stages (deep sleep, light sleep, REM) + sleep quality evaluation
- Pressure Monitoring: Tracks stress levels + breathing training guidance
- Female Health Management: Ovulation period tracking + physiological cycle reminders
- Daily Activity Tracking: Step counting, calorie consumption, distance tracking
Sports & Positioning Capabilities (Official Specs)
• Sports Modes: Supports over 150 sports modes, including:
- Outdoor Sports: Running, hiking, cycling, swimming (pool/shallow water)
- Indoor Sports: Gymnastics, yoga, strength training, elliptical machine
- Special Modes: Swimming mode (adapted to 5ATM waterproof performance)
• Positioning Performance:
- Supported Satellite Systems: Beidou, GPS, GLONASS, Galileo, QZSS (five major systems)
- Positioning Function: Independent GNSS positioning (records sports trajectories without connecting to a phone)
• Sports Data: Precisely records exercise duration, distance, heart rate range, calorie consumption, etc.
Connectivity & Compatibility (Official Details)
• Wireless Connectivity:
- Bluetooth 5.3 (stable connection to smartphones, supports data sync and call notifications)
- NFC: Supports national transportation card (300+ cities interoperable) | WeChat/Alipay offline payment | Device pairing
- GNSS: Five major satellite systems for fast and accurate positioning
• System Compatibility:
- Supported Systems: Xiaomi HyperOS, Android 8.0 or later, iOS 12.0 or later
- Supported App: Xiaomi Sports Health (for data sync, device management, and function settings)
• Language Support: Simplified Chinese, Traditional Chinese, English
Battery & Charging (100% Official Data)
• Battery Specifications:
- Battery Type: Built-in lithium-polymer battery
- Battery Capacity: 470mAh (large capacity for long standby)
• Battery Life (Official Test Data):
- Typical Mode: Up to 20 days
- AOD Mode: Up to 10 days
- Long Battery Life Mode: Up to 30 days
• Charging Specifications:
- Charging Time: Approximately 85 minutes (full charge, data from Xiaomi Laboratory)
- Charging Method: Magnetic charging cable (included in package)
• Note: Actual battery life and charging time may vary by usage scenario, environmental temperature, and battery lifespan.
Durability & Waterproof (Official Standards)
• Waterproof Rating: 5ATM (equivalent to 50m underwater depth)
• Suitable Scenarios: Pool swimming, shallow water swimming, and other shallow-water activities
• Unsuitable Scenarios: Hot showers, saunas, diving, and water sports with high-speed water flow impact
• Usage Notes:
- Rinse with clean water slowly after use in seawater
- Dry TPU/leather/metal/woven straps promptly after contact with water (avoid exposure to sunlight or high-temperature drying)
- Waterproof performance is not permanent and may diminish over time
In the Box (Official Packaging List)
• Redmi Watch 4 Head Unit × 1
Function Support Limitations
• Waterproof Limitations: Not applicable to hot water, high-pressure water flow, or deep diving; waterproof performance may decrease with use
• Compatibility Restrictions: Some functions (such as Mi Miu Center) are only supported by selected Xiaomi/Redmi phones
• Positioning Limitations: GNSS positioning accuracy may be affected by environmental factors (e.g., dense buildings, tunnels)
• Charging Limitations: Charging time is laboratory data; actual time may vary by environmental temperature and charger specifications
• Feature Limitations: Remote photography is only supported by selected smartphone models