When you use ProntoNEO for the first time, you have to install the batteries.
The ProntoNEO requires 3 AA-batteries (3 x 1,5 V) to function. You can use either
primary or rechargeable batteries.
1 Remove the battery cover by pressing and sliding.
2 Place the batteries in the battery compartment.
3 Place the battery cover back on.
After a few seconds, ProntoNEO starts up automatically and an Introduction
screen appears. ProntoNEO beeps twice to indicate that it has started up
Taking a First Look