Electronics
How to Choose a Smartwatch: Screen, GPS, Battery and Sensors
A checklist for buying a smartwatch you will actually wear every day.
· 3 min read
Key takeaways
- AMOLED screens are easier to read outdoors.
- Dual-band GPS is more accurate in cities.
- Battery life decides whether you wear it to bed.
Screen
AMOLED panels have deep blacks, high brightness and allow always-on displays without draining the battery too fast. Size matters for comfort — try a 42–46mm case for most wrists.
GPS and sensors
Dual-band GPS uses two satellite frequencies to reduce errors near tall buildings. Heart-rate and SpO2 sensors are standard; temperature sensing is becoming common.
Battery life
If you want sleep tracking, look for at least a week of battery. Otherwise you will charge it at night and miss the data.
Pro tip: Prefer sleep tracking without a watch? A smart ring is lighter in bed.
Frequently asked questions
Products mentioned in this article
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