1.43" AMOLED screen, 326ppi high-definition resolution, delicate colors, giving you an extraordinary visual experience Watches monitor HRV in real-time, analyze every heart beat, and timely obtain health information. Differences in information, keep track of your heart health status and do it in advance good prevention work Real time sleep monitoring, sleep quality and big data analysis, score sleep quality with comprehensive dynamic technology and accuracy identify various sleep issues and provide personalized sleep services 100+ sports modes, choose and adjust your favorite sports and add them to your watch. All sports content is based on a certain logic, utilizing a combination of multiple sports events. The function seamlessly switches between various sports without interrupting training records IP67 waterproof, fearless of rain, suitable for any daily use scenano, don't worry about rainwater issues Specifications: Functions Call function, heart rate measurement, blood oxygen measurement, blood pressure measurement, breathing training, sleep information Exercise recording: counting steps, exercise time, exercise mileage, calorie consumption, sleep monitoring, uploading APP to save exercise sleep data All touch / Health monitoring / APP download / Encoder function Flip wrist bright screen, time display, remote photography, music control, stopwatch, timer, alarm clock, calculator, personal card, calendar Smart reminder: phone, message, QQ, WeChat, more news push Do not disturb the mode Settings, look for the bracelet Sports mode (walking/running/climbing/cycling/basketball/badminton/football……120+Motion pattern) News push: phone, message, QQ, WeChat, Facebook, Twitter, WhatsApp, Linkedin, Lnstagram, Messenger, Snapchat, Line, kakao talk, viber, skype, telegram UI LANGUAGE Default language: EnglishUI Push language: Chinese, Traditional Chinese, English, German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Korean, Vietnamese, Arabic, Hebrew, Thai, Croatian, Turkish, Czech, Dutch, Indonesian, Malaysian, Finnish, Greek, Romanian, Hindi, PersianBuilt-in firmware languages: Chinese, English (default), German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Vietnamese, Arabic, Hebrew, Thai, Croatian, Turkish, Czech, Dutch, Indonesian, Malaysian, Finnish, Greek, RomanianAPP Language: English, Simplified Chinese, Traditional Chinese, German, French, Arabic, Czech, Greek, Spanish, Japanese, Persian, Italian, Korean, Dutch, Polish, Portuguese, Russian, Finnish, Swedish, Thai, Hungarian, Slovak, Croatian, Albanian, Turkish, Ukrainian, Hindi Parameters screen Round 1.43 inch AMOLED px 466*466 System Android 6.0 and above, IOS 10 and above, supporting Bluetooth 4.0 Bluetooth version BLE5.0 Chip RTL 8763EWE PPG chip HX3605 Battery 260mAh memory 128Mb Standby time 22-25 days Battery life 7 DAY Charging way Magnetic suction charging wire MotorV Built in, vibration reminder Waterproof level IP67 material Zinc alloy+plastic Sensor STK8321 Watch size 47*11.5MM Strap width 22mm