How to turn on your Calibrex 2:
To turn on your Calibrex 2, press and hold the power button for 1 sec.
Checking the battery level of your Calibrex 2:
3 color sets for 3 stages of battery level (green, orange, red)
Green means your device is 80% or higher.
Orange means your device is from 30%-80%.
Red means you need to charge to make sure you have enough charge for a full session.