The baby unit only has an on / off switch and a gentle, switchable sleep light (Warning: holding baby unit exclusively through power supply, not on battery), the parent unit has in addition to the on / off switch, two volume buttons, an optical, 5- step volume indicator and a power cord (optional usable, the parent unit can also be operated by battery).
The tested range was in our very narrow and built with a lot of reinforced concrete apartment surprisingly high (our W-Lan are already on long, where the Philips Avent sends SCD501 / 00 still clear noises), the sound of the parent is very good: Absolutely lifelike, no clatter or creak. The baby unit the way does not have to be parked in the child, but also sends out 4-5m distance yet sensitively even faint sounds.
The small plastic housing act extremely valuable and are with their rounded design is very comfortable to hold, the parent unit can be pushed by the recessed buttons and the complete lack of any pointed, protruding or otherwise interfering parts well in the pocket without contorting while must. Very pleasant it is possible the battery compartment use, although the firm includes, but is easy (and without cancel nails) can postpone his thumb.
On the unit I miss only an optional battery operation the baby unit, the price is relatively high for a basic unit, but still justified, as it indeed is a radio in a baby phone basically.
All in all a buy recommendation!