Some watches pack as many as 20 sensors! These demand a lot of power, and batteries on most smartwatches are quite average. Or at least, we hope there were better battery life standards on a smartwatch.
Smartwatch advertisements are often quite misleading, especially in terms of looks. If you ever come across an online listing for a low-end smartwatch, the images published for it is far away from how it looks in real life. Unfortunately, some users realize this after they buy a smartwatch.
Skin irritation is the first and the most common issue if you wear a smartwatch or band all day. There can be situations like your skin is sensitive, which might cause rashes or skin issues. Some watches in the past have also been known to cause light burns due to heating.
Many budget smartwatches come with inaccurate sensors. This defeats the purpose of adding fitness-related data. Some watches even promise measuring blood pressure although they do not have required hardware.
When you can access so much information on your wrist, there is always anticipatory anxiety about what you might see next. Health data is available on your wrist, and overusing these features can make you over-conscious and a little anxious.