Pls know that it only support SIM card for 2G network,but   not for 4G or 5G

Feature:

Cool and Safe
This smart watch is made of certified silicone and ABS, it is non-toxic and  safe, and does not harm children. With cool and special appearance in different  colors, this watch will be greatly welcomed by kids.
Exact Location
We use LBS Base Station location and more to achieve accurate position.
Hold Incoming Calls
After setting the number of SOS Family, Contacts, Phone numbers in the APP,  children can only receive calls from the number setting. Not dangerous call from  a stranger. Kids can press the SOS button or familiarity number to call it!
Walkie Talkie
By this function you can have a voice conversation between smart watch and app.  Send voicemail about the app or watch the recording of the send message to the  app phone everything is available.
Security Zone
The Min Fence radius is within 500 meters, if the children have walked out of  range, the guardian’s phone will receive an alert.
Real-time positioning tracking
Real-time positioning tracking is achieved throughout the day, and positioning  is more accurate. You can view your child's footprint, the history track can be  played back, and the environment can be monitored remotely
Others Functions
Long standby, GPS positioning, multiple positioning, phone alert, GSM  double-sided call, SOS emergency dial, flashlight, camera are combined in one  powerful watch.

Specification:

Type: Kids Smart Watch
Material: Silicone, ABS
Color: Purple/Blue
Quantity: 1 pc
Frequency: GSM 850/900/1800/1900 MHz, 2G
Memory: 32 MB +32MB
Applicable system: For iOS and Android system
Screen size: 1.44 inch
Pixel: 8 W
Wireless distance: 10m and above
Operation Mode: Touch Screen + Button
Tracker model: LBS tracker base station
Speed Accuracy: 0.1m / s
Battery Capacity: 3.7V 400MA
Charging time: 2H
Standby time: 3-4 days
Product Size: 50.2*40*14mm/1.97*1.57*0.55”
Net weight: 115g/4.06oz

Package:

1* Kids Smart Watch
1* Charging cable
1*User manual