Basic parameters Screen size: 1.54-inch high-definition circular screen Touch screen: capacitive G+F screen Resolution: 360 * 360 System: Based on Android operating system v8.1 CPU model: quad core SC9832E CPU frequency: 1.4GHz quad core RAM: 2G/4G ROM: 16GB/64GB (two versions to choose from) SIM card type: Small SIM card Battery capacity: 800mAh Charging method: magnetic suction charging Camera pixels: high-definition 5 million pixels Bluetooth transmission: Bluetooth 4.2 WLAN function: WiFi Data interface: 4-pin magnetic charging, supporting USB function Features: contacts, SMS, recording, alarm clock, timer, stopwatch, weather forecast, calendar, wireless network, Bluetooth, camera, music and video playback, GPS navigationNetwork type: Single SIM cardWatch size: 51 * 51 * 15.4mmNetwork mode: GSM/WCDMA/TDS-CDMA/LTEFrequency band: GSM: B2/B3/B5/B8 WCDMA: B1/B2/B5/B8 TD-SCDMA: B34/39 LTE-FFDD: B1/B2/B3/B5/B7/B8/B17/B20 LTE-FDD: B38/39/40/41 Introducing Rainbuvvy PG999 4G smartwatch - a multifunctional smart sports watch that will completely change your health and fitness habits! This watch features a smooth and stylish black surface, powered by an 800mAh battery, ensuring long-lasting performance for several days. This smartwatch features a 1.54-inch large display screen, providing clear and vivid visual effects, making it easy to read time, date, and other notifications. This watch also supports Bluetooth calls, so you can easily make and answer calls without taking out your phone. Monitoring your heart rate and sleep patterns has never been so easy! With the Rainbuvvy PG999 smartwatch, you can monitor your heart rate in real-time and understand sleep quality. Whether you are an athlete or just looking for a healthier lifestyle, this watch is your ultimate companion. This watch is not only very suitable for monitoring your health status, but also has a wide range of other tracking functions. A sports watch will record your daily steps, calories burned, and distance traveled. This watch is perfect for anyone who wants to record daily goals. In short, the Rainbuvy PG999 4G smartwatch is the perfect choice for anyone who wants a reliable and durable smartwatch, which will help them lead a healthier and more proactive lifestyle. With its advanced features, it is your perfect watch! Let's take action today and experience what sets us apart!