HD Video Calling 4G video chat with the high-definition resolution, provide a smooth video call experience for parents and kids at any time and anywhere, more convenient and vivid communication. Real-Time Location by GPS/WIFI/LBS Whether the children are indoors or outdoor, parents can be got the kid's real-time location from the APP on their smartphone. Also can take the calling. Supporting history track. SOS Calling One-click to ask for help by pressing the SOS button for more than 5 seconds, the watch will circularly call family numbers that were presented in the APP and send messages to the Guardians. Large Capacity Battery Low Power Consumption, magnetic pogo pin charge, with a 650mAh rechargeable battery, Working time 1-2 days, Stand-by time 3-4 days. IP67 Waterproof Soft silicone strap, precision waterproof design, no need to worry about wet conditions, you can wear it with confidence when exercising and sweating.