CPU: UMS312+PAR2822 dual chip Memory: DDR4 6GB, EMMC: 128GB SIM card: independent standby, hands-free calling, Nano SIM Supported frequency bands: GSM: 850/900/1800/1900 WCDMA: B1/B2/B5 TD-SCDMA: B34/B39 LTE-FDD: B1/B2/B3/B5/B7/B8/B12/B17/B20 LTE-TDD: B38/B39/B40/B41 (100MHz) Touch screen: 1.6-inch 400 * 400 resolution high-definition full circle screen Camera: Front 2 million/main 8 million high-definition camera Bluetooth: supported WIFI: Support GPS: Support Heart rate: supported Step by step: supported Data interface: POGO PIN+magnetic suction cable Battery: Smartwatch 900mAh Standby time: smartwatch 48 hours Music playback: smartwatch for 6 hours Call time: 2.5 hours on smartwatch software function Operating System: Android 11 Menu bar: Phone, contacts, SMS, settings, heart rate, blood oxygen, sleep, breathing training, browser, camera, gallery, calendar, alarm, music, recording File management, weather, sports, desktop settings, system themes, system optimization, dial market, application market, mobile assistant, etc Sports: outdoor running, outdoor walking, indoor running, cycling, basketball, football, table tennis, play badminton, rope skipping Settings: network and internet, connected devices, apps and notifications, battery, display, sound, storage, location information, system, about mobile phone Health: heart rate, blood oxygen, sleep, step counting Weather: Local Weather<Under SIM card network> Network and Internet: WLAN, hotspot and network sharing, airplane mode, mobile network, traffic saver Applications and notifications: default applications, permission managers, special application permissions Mobile assistant: Scan QR code to connect; Enable remote shooting, music control, and phone search System: Language and Input Method, Date and Time, Reset Options Supported languages: Chinese (Simplified), Chinese (Traditional), Japanese, Korean, English, French, Russian, German, Dutch, Portuguese, Arabic, Persian, Brazil, Portugal, Malaysia, Italy, Trkiye, Thailand, Vietnam, India, Indonesia, Greece, Spain, Czech and other languages (optional) Air upgrade: supported Watch dial: built-in watch dial+dial market+custom dial GAO Fit APP Android phone: supports original operating system version 8.0 and above, (Settings - About devices, check Android version) Apple phones: support system versions 11.0 and above. You can check the version through the phone settings - General - About this phone. If the version is lower than 11.0, please upgrade first Smart watch diameter 51.5 * thickness 15.8mm PU strap, detachable, 22mm wide, total length 267mm, adjustable range 163-255mm Watch color: ceramic black Net weight (watch): 71g Gross weight (packaging): 264g (including USB cable and power bank) Packaging size: 123 (L) mmX110 (W) mmX68 (H) mm Packaging content: Watch/Instruction manual/Magnetic wire/SIM card opener/(USB cable/optional power bank)