Most:
Its size and weight, very small, very light.
Its autonomy, a charge lasts several days for my use.
He resisted several falls.
Cons:
To save battery power alone it stops after a while dinactivité, which is fine for its autonomy and reactivates when tapped a key, only between two we lost the Bluetooth connection and it has sometimes surprises on the first entry (deadlines, missing letter, letter reversal). It lacks an energy saving mode on / off switch.
