"This is a $30 Bluetooth remote control for your phone that happens to be shaped like a watch."
The '1.83" HD Display' is a large, basic LCD panel. Its resolution is decent for the price, but it will be less vibrant and power-efficient than the OLED screens found on more expensive watches.
This product is for someone curious about smartwatches but completely unwilling to spend more than the price of a takeout dinner. It's a low-risk purchase to see if you even like having notifications and calls on your wrist.
Anyone needing reliable fitness data, a polished user experience, or a battery that confidently lasts multiple days with features enabled should save their money. If your data living in a generic third-party app is a concern, avoid this.