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turn off HEY SIRI.

brightness as low as you can take it

minimize apps that refresh in the background

turn on theater mode if you know you wont be needed to look at the screen for a while (like sitting at a desk)


what series do you have? if its S3, you should be fine without changing anything.
 
As title. What are the best settings for battery life?

Are you unhappy with your battery life ? What Watch and software version ? You can change various things that all have a negligible impact on battery. But really most things are a compromise and effects the convenience and usefulness of the watch.
 
As title. What are the best settings for battery life?

"What does Optimal" mean for your situation? Battery life is always a tradeoff between having features turned on and using more power, and turning them off and enjoying more time between charges. So for me, optimal means getting through the day from 7am to 11pm with two longish workouts at some point. I don't need to do anything special to achieve this If you're finding battery life falls short then some of these tips might help.
 
The battery life on my S3 LTE is fine. I’m currently on 81% after 2hrs 12 mins usage and 17 hrs 33 standby.
 
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