sos watch

This watch is a 5G model that supports features such as GPS tracking, voice chat, electronic fence, voice calling, voice time reporting, SOS alarm, ringtone finding, and heart rate and blood pressure monitoring. It also supports high-definition calling and is waterproof. It is compatible with all three major Chinese mobile networks (China Mobile, China Unicom, and China Telecom). 

The positioning version primarily focuses on features like GPS tracking, electronic fence, ringtone finding, voice time reporting, and SOS alarm, but does not support calling. 

The calling version allows for positioning, micro chat, voice calling, and automatic answering of incoming calls, just like making a phone call on a mobile phone. 

The video calling version includes all the features of other models and additionally offers video calling functionality.