Screen size 1.43 inches Resolution 466 * 466 Touch support/full touch The system requires Android 8.0 or above/iOS 12 or above Bluetooth version 5.0BLE Main control chip RTL8763EW (dual mode) PPG chip HX3605 Battery capacity 400mAh Memory ROM: 128Mb The horn supports 0815 waterproof horn Mic head support Motor support Charging mode Wired magnetic suction charging Waterproof grade IP68 Material surface shell/zinc alloy+bottom shell/two-color molding plastic Sensor three-axis sensor STK8321 NFC access control supports unencrypted access control locks with a frequency of 13.56MHz Watch size 55.9 * 49.35 * 14.3 (excluding strap) The strap is 120MM long and 22MM wide, while the strap is 80MM short Watch color Silver color, printing color Specifications: Function: 1.1.43 inch AMOLED high-definition full touch screen, replaceable watch strap, metal body, Bluetooth call, Bluetooth music, true heart rate, true blood oxygen, NFC access control, long screen display, 400 mah high-capacity high-voltage battery. 2. Double button, music control, blood oxygen, continuous heart rate monitoring. 3. Weather, sleep monitoring, support cloud dial push, steps, search for mobile phones, timers, stopwatches, Siri voice assistant, sports records, and breathing training. 4. Remote control photography, message notification, long sitting reminder, drinking reminder, alarm clock reminder, women's health, WeChat sports. 5. Message notification: call, SMS, email, WeChat, QQ, SKype, whatsAPP, Facebook Messenger, Linkedin, Twitter, LINE, lnstagram, Snapchat, Viber, Telegram Kakao TalK. 6. Sports mode: running, walking, badminton, tennis, basketball, table tennis, cycling, yoga, rope skipping, mountaineering, indoor running, elliptical machine, rowing machine, lazy bike, exercise bike, baseball, rugby, cricket, strength training. 7. UI language support: Chinese, English, Spanish, Portuguese, German, Italian, French, Russian, Japanese, Polish, Arabic, Hebrew. Package Included: 1 * Watch 1 * Charging cable 1 * Instructions