**Product Specifications:**
**Brand:** HUAWEI
**Warranty Information for Wearable Products:**
1. Warranty period starts from the product's manufacturing date plus 90 days, as indicated by the "Estimated Warranty End Date" found on the official website or through scanning the quick guide. It may differ from the purchase invoice date. It is recommended to bind the product to HUAWEI Health App and HUAWEI Care App for warranty updates.
2. Regularly use the product and wait 3-5 days before checking for warranty updates on the HUAWEI official website. The electronic warranty certificate may take some time to refresh due to network conditions.
3. If the warranty period has not refreshed after 5 days, customer service will calculate the warranty period based on the purchase date recorded on the valid purchase invoice. Customers can also contact HUAWEI customer service hotline at 950800 for inquiries.
4. Warranty status can be checked on the HUAWEI official website at [huawei.com](https://consumer.huawei.com/cn/support/warranty-query/).
**HUAWEI LWATCH4 Smartwatch Specifications:**
- Powered by HarmonyOS
- Material: Stainless steel case with 3D curved glass
- Display: LTPO Always-On Display
- Features: eSIM independent calling, WeChat for smartwatches, independent navigation and taxi services
- Health Functions: Micro health check, ECG heart analysis, 60-second health measurements, health trend analysis, activity tracking
- Water Resistance: 5ATM, suitable for swimming up to 10 meters
- Sports Modes: 100+
- Battery Life: Up to 14 days in ultra-long battery life mode
- Charging: Wireless super-fast charging, 1-minute charge for a full day's use
- Compatibility: Compatible with both iOS and Android devices
**HUAWEI Health App Features:**
- Provides professional sports records, training courses, and health services
- Offers sleep monitoring, blood sugar health assessment, and cardiovascular risk evaluation
- Monitors heart rate, blood oxygen levels, sleep patterns, stress levels, and more
- Supports personalized health improvement plans and sleep improvement strategies
**Additional Features:**
- Independent music playback, NFC payment support, emergency SOS features, family health monitoring, and over 100 sports modes
- Long battery life, durable stainless steel case, water and dust resistance, and advanced health monitoring capabilities
**Compatibility:** Compatible with various applications such as Baidu Maps, Gaode Maps, WeChat for smartwatches, Alipay, Tencent Sports, Sina News, and more
**Health and Safety Features:** Offers real-time health monitoring, sleep tracking, stress management, and personalized health insights
**Sports and Fitness Tracking:** Tracks over 100 sports modes, provides coaching and guidance, and encourages daily physical activity
**Durability:** Features a robust stainless steel case, water resistance up to 30 meters, and dust resistance for outdoor activities
**Charging:** Supports wireless super-fast charging, ensuring quick and convenient charging for uninterrupted usage
**Material:** Graphene cooling system for efficient heat dissipation, ensuring optimal performance and longevity
**Warranty:** HUAWEI offers warranty coverage for its smartwatches, with details available on the official website for warranty queries.
