Can someone explain to me what use does a smartwatch even have? Cause i cant think of one use

[FatedReality]

I don't really understand why smartwatches are a thing maybe I'm missing something but everything a smartwatch does a smart phone does better and is capable of doing more. Mostly everyone has a smart phone at this point and anyone that doesn't probably either cant afford one ( I'm assuming smartwatchs will be more expensive then smartphones so they wont buy one) or just don't care enough for it. Other then just sheer convenince I don't know why someone would want to buy one over a smart phone. Unless it is significantly cheaper then smartphones but I doubt that.