10 meters ideal, but already no longer recommended image quality during the day at distances up at dusk.
Sound quality is more than just ideal and noise, but very sensitive to surrounding sounds in a radius of up to 4 meters - then superimpose the spoken.
Otherwise everything Top in this device.
Desirable image transmission would additionally via MMS as well as video sending via MMS or e-mail, despite storage on SD Mini
However, the functionality as IP cam here would not be bad if any changes in the direction of data transmission could be made here.