Which LED light indicators shows that tracker is on charging?

Which LED light indicators shows that tracker is on charging?

The tracker has three light indicators which shows whether the device is receiving proper GPS & GSM signals and if it is fully charged or not.
When you put your Trakbond device on charging , GREEN, BLUE & RED light will blink simultaneously but after 5-minutes only RED LED light will remain ON.
Once it is fully charge, the RED light will go off and BLUE/GREEN light will again start blinking.