MT6761 quad-core CPU, with Android 9.0 system, 4GB RAM and 64GB ROM. Support Nano SIM card, 4G LTE network, WiFi, BT 5.0 wireless connection, 2.88 inch round touch screen, bring you a smart phone-like smart experience. The watch supports multiple sports modes. Generate trajectory maps and professional data analysis to allow you to better manage health activities and provide GPS positioning. Built-in professional heart rate detection sensor, supports heart rate monitoring and generates data display. Comes with an application store and supports APP download. Built-inFive million cameras, 13 million cameras. It supports the manual selection of language on the watch, answering and making calls, phonebook, sending SMS, downloading third- app, video call, photo taking, alarm clock, calendar, calculator, recording, local music playing, weather, voice search, step counting, heart rate, multi exercise mode, looking for mobile phone, stopwatch, music control, holding up the hand to light the screen, changing the dial, pushing messages, etc. Specification: CPU: MTK6761 Display screen: 2.88inch TFT touch screen: Display screen Resolution: 480*640 RAM/ROM: 4G+64G SIM card: Nano SIM The internet: 2G/3G/4G system: Android 9.0 Frequency band: GSM: 850 / 900 / 1800 / 1900 WCDMA: B1/B2/B5/B8 TD-SCDMA: B34/B39 LTE-FDD:B1/B2/B3/B5/B7/B8//B17/B20 LTE-TDD:B38/B39/B40/B41(100MHz) camera: 5.0MP+13.0MP Bluetooth: 5.0 Heart rate sensor: Hexin hrs3300 battery: 2300mAh wifi: Support 2.4g/5g GPS: GPS+Go Bluetooth effective distance: 10m (open environment) Battery life: 3 days charging : Magnetic charge Charging time: 3 hours Colour:Space Gray Material:Aluminum alloy + silicone Package Contents: 1 x smart watch with strap 1 x magnetic cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.