Some details not specified in the technical description:
- Receiving part (parent unit with display) has a rechargeable battery of 1600 mAh. It is not clear if it is a Li-Ion battery or Ni-Mh, but loading the green led indicating the end of the load to remain on time.
- The camera, and here is the weak point of my point of view, can be powered by the AC adapter or batteries. The specific user manual that both systems (batteries and electric current) can not be used simultaneously. It's a shame because every time you want to connect to the electrical current, you must remove the batteries (at least not to make mistakes). It is not specified whether it is possible to let the batteries when it is connected with the AC adapter.