"It has the screen and call quality of a $150 watch, with the sensor accuracy of a $30 one."
The 'Make/Answer Calls' feature uses a built-in microphone and speaker to turn the watch into a Bluetooth headset. Your phone provides the actual cellular connection and must remain within Bluetooth range (~30 feet) for this to work.
This is for someone who prioritizes smartwatch convenience features—a bright screen, notifications, and taking calls on the wrist—over athletic-grade sensor accuracy. If you want the look and feel of a modern smartwatch for a fraction of the price, the compromises here are logical. It is an excellent value for a general-purpose daily wearable.
Athletes or anyone serious about tracking fitness data should pass; the sensors are for directional insight, not precision. Users deeply integrated into Apple Health or Google Fit will find the proprietary 'VeryFit' app a restrictive data silo. If you want phone-free run tracking, you need a watch with built-in GPS, which this lacks.