Here are some specifications of the power module:
l 5000 mAh;
l Overcurrent protection;
l Short-circuit protection;
l Transfer efficiency: ≥90%;
l working temperature: -20℃～+55℃;
The best part of the power module I think is it's wireless. You don't need to a USB cable to connect the phone and power. You know, sometimes, using a USB cable can be inconvenient and the USB cable is easy to be defective if you use it a lot.
Besides, safety is important, so overcurrent protection and short-circuit protection are good for me. And working temperature can fit most extreme environment needs.
Portable power bank on Amazon is about $50, so what's the price of power module?
Guess it and the winner will get one module for free. Winner will be announced on Jan.15
1. about one week later you can guess the price of walkie-talkie module and win a module.
2. if the winner doesn’t need the module, you can contact us to change to other gifts.
You can also guess the price of other modules:
These members' answers are right:
After random selection, the winner is @rileym1, congratulations! Please send your address info to @bander, we will send you the prize.
Thanks for your support, wish you can be the lucky winner next time!
If you like the modules or S90, you can get one on Kickstarter: https://www.kickstarter.com/projects/doogee/doogee-s90-the-most-versatile-unbreakable-smartpho