Product Parameter Model:K01-J CPU : SCL9832E PA2822 Screen Size : 1.99 inch HD Screen Display : 400 * 452 pixels Bluetooth Version: Bluetooth 4.2 Operating System: Android 9.0 Running memory (RAM): 4GB Body memory (ROM): 64GB Watch Size : 51.07*43.57*14.8MM Watch Weight (With silicone strap) : 60g Battery :1000mAh High Density Lithium-ion Battery Camera : Side Camera 5.0MP ,Front camera 2.0MP SIM Card Quantity : Single SIM Card (1 * Nano cards） Charging Method : Magnetic charging Support WIFI direct connection, Support WIFI Hot spot, Support G PS Network GSM(2G): B2/3/5/8 WCDMA(3G): B1/2/4/5/8 LTE(4G):B1/B2/B3/4/B5/B7/B8/B12/B17/B20/B38/B39/B40/B41 Features (1)1.99 inch HD Full Touch Screen, The picture is clear. (2)Support APP download. Watch built-in 64GB memory，You can download more ap ps through Google play Store (3)The smart watch supports one 4G SIM card. Directly can make calls/receive calls/send messages, etc. (4)Heart rate monitoring, Blood oxygen monitoring, Sleep monitoring (5)Customized screen page, And dozens of UI interface options, There is always one for you (6)Smartwatches come with G PS positioning. You can turn on map navigation on your watch (7)Supports 9 Sports Modes, Outdoor Run/Indoor Run/Outdoor Walk/Ride Bike/Play Basketball/Play Football/Play Pingpong/Play Badminton/Rope skipping, You can also download the APP "Strava". Enjoy the fun of sports anytime, anywhere. Make you the "King of the Mountain" (8)Life Waterproof, the whole watch has been reinforced by water resistant rubber, each watch pass strict waterproof test, so that you don't need to take off watch when you washing hands or face. (9)After downloading the APP "GaoFit" on your smartphone. A smart watch can be connected. The watch syncs your smartphone's incoming call and message notifications. Heart rate monitoring, blood oxygen monitoring, sleep monitoring, step counting and other data will be synchronized to the smartphone APP "GaoFit" (10)Other Functions: Bluetooth ,Weather Forecast, Alarm clock, Calendar, Recorder, Hotspot sharing. Phonebook, Passometer etc.