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CPU: Realtek8762DT+HN333 Heart rate sensor Tianyi Hexin HX3605, acceleration sensor SC7A20 Bluetooth: BLE5.0, display screen: 1.85 "TFT, 240 * 280 Physical button: 1, with encoder, touch control: full screen touch Battery: 260mah polymer battery, charging interface: 2PIN top pin interface Product colors: gold, silver, black, green Product size: 45.7mm * 38.7mm * 11mm Case material: aluminum alloy Strap specification: 22mm silicone strap (removable and replaceable) Product weight: 41g, waterproof grade: IP67 Bluetooth distance: ≥ 10M, battery life: 5-7 days (depending on usage scenario, charging time: ≤ 2H) Paired with smartphone system: Android 5.1 or iOS 8.2 or above Bluetooth 4.4 BLE system Bluetooth call, watch phone book: can synchronize 100 contacts to the watch Built in dial: 10 built-in dials, dial market and custom dial Device name (HT15), address, version number Brightness adjustment: 5 gear adjustments (default second gear, raised wrist to light up screen: default on for 2 seconds) Search for phone, restore factory settings, do not disturb mode, voice assistant, time display Stop watch, remote camera, button or shake to take a photo Exercise monitoring: Record daily steps, exercise distance, and calorie expenditure Sleep monitoring: Automatic monitoring of falling asleep, waking up time, and sleep quality Heart rate monitoring, blood pressure monitoring, respiratory exercise Sports mode: 18 sports modes Alarm clock, sedentary reminder, goal reminder Incoming calls: mute incoming calls, reject incoming calls SMS: Watch displays phone push SMS and application messages Social media: QQ/Email/Facebook/Twitter/WhatsApp/Line/Skype/WeChat, etc Music control: can control the previous/next track, pause, start, and volume of mobile music Weather: Display (temperature/air quality/weather) Social sharing WeChat friends, WeChat Moments, WeChat favorites, QQ, Facebook, Twitter, LinkedIn, Flickr Firmware upgrade can be done by upgrading the watch firmware in the air through the APP APP Name: FitCloudPro Watch firmware languages: Simplified Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Arabic, Italian, Polish, Turkish APP language: Simplified Chinese, Traditional Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese Arabic, Dutch, Italian, Czech, Greek, Hebrew, Indonesian, Malay, Polish, Thai, Vietnamese, Finnish, Romanian, Turkish, Croatian) Packaging: Packaging size: 165 * 74 * 24mm Weight: 109g, packing quantity: 90/box Packaging list: watch head, strap, charging cable, instruction manual, packaging color box Outer box size: 362 * 3 40 * 239mm