Finow x3 plus battery life time

Hello!
This question goes to the Finow x3 plus users.
I consider that the life time of my battery is pretty deficient. It last approx. 6-8 hours after charging the device the whole night. I am using m2d connected via bluetooth to receive notifications (whatsapp and e-mails) because this is the only real benefit that I find from having a smartwatch besides from checking the time once in a while. I am not constantly surfing on the internet from the watch or doing more than checking quickly if i have new notifications each time it vibrates.
Is this normal? Does your battery last approx. the same?
Can you give me some advice on how to stretch the battery life without sacrificing the usage of m2d?
I have the latest wireless update.
The brightness of my display is at 40% and it goes to sleep after 30 seconds.
I must mention that my charger and my watch have a small burn out on one of the pins (it looks like it got melted, but even before that the battery lasted the same as now). The device does not seem to have problems while charging. Is this extremely relevant? Should I contact Gearbest to make use of my one year guarantee for repairments or is this something common to experience with the Finow X3 plus?

Yes. It goes dead fast. The thing that worries me though is that burn on the charger. I’d send it back.