Sleek Curved Display Ultra-Thin DesignFeaturing a 1.72-inch 3D curved screen with a zinc alloy case, the HT31 smartwatch boasts a premium look with a super-slim 10mm body. The high-resolution display ensures a smooth and immersive viewing experience, while the FitCloudPro app provides seamless connectivity for stable performance Advanced Health Monitoring Fitness TrackingStay on top of your health with precise heart rate, blood oxygen, and sleep monitoring. Equipped with 100 sports modes, the smartwatch supports activity tracking for various workouts, helping you achieve your fitness goals efficiently. The built-in breathing exercises also assist in relaxation and stress management Bluetooth Calling Smart AssistantMake and receive calls directly from your wrist with high-definition Bluetooth calling. The watch also includes a voice assistant for hands-free operation, SOS emergency call function, and essential tools like an alarm clock, calendar, calculator, and weather updates Multi-Functional with IP68 Waterproof RatingDesigned for everyday convenience, the HT31 comes with a built-in flashlight, UV light, and over 150 customizable watch faces. The IP68 waterproof rating ensures durability in various conditions, making it suitable for workouts, swimming, and daily wear Multi-Language Support OTA Firmware UpgradesSupporting multiple languages, including English, Japanese, and Traditional Chinese, the smartwatch provides an intuitive user experience. It also offers over-the-air OTA firmware upgrades via the FitCloudPro app for continuous optimization and new features Specifications Product Overview Type Description Product Size 42.640.410.4mm Case material Plastic Zinc Alloy Strap specifications 24mm silicone strap removable and replaceable product weight 45g waterproof level IP68 Endurance 5-days depending on the usage scenario Charging time 2H Mobile Phone System Android 5.1 or IOS 8.2 or above supports Bluetooth 5.0BLE system App name FitCloudPro APP language 24 languages Simplified Chinese, Traditional Chinese, English, German, Russian, Spanish, Portuguese, French, JapaneseArabic, Dutch, Italian, Czech, Greek, Hebrew, Indonesian, Malay, Polish, ThaiVietnamese, Finnish, Romanian, Turkish, Croatian Hardware Configuration HW specification CPU AB5691 RAM 578KB ROM 640KB Plug in Flash Externl 128Mb heart rate chip HX3918 Accelerometer STK8321 Bluetooth BLE5.0 Display 1.72 360360 IPS Display Physical button 1 piece Touch Full screen touch Flashlight Support money counter Support Battery 300mAh polymer battery Charging mode USB magnetic charging Software Configuration Built in dial Built in 6 dials, supporting customized dials and downloading dials Basic function Data, sports, sports records, weather, information, women, musicsidebar, stopwatch, timer, alarm clock, collection code, business card, calendar, calculator, search phone, camera Bluetooth call connection Connect once Health management Exercise monitoring, sleep monitoring, heart rate monitoring, blood pressure monitoring, respiratory exercise Sport mode 9 movement modes at the watch end, mass movement mode at the APP end Conversation Dialing, frequently used contacts, call logs, voice assistant WeChat campaign Synchronize the movement steps of the watch to the WeChat leaderboard Message and call reminder Telephone, SMS, WeChat, QQ, WhatsApp, Line, Facebook, Facebook messenger, Kaokao, Twitter, Skype Firmware update Watch firmware can be upgraded in the air through APP