2.0 out of 5 stars
A great concept spoilt by failed technology and order fullfilment, 27 Dec. 2012
First version arrived on time. However, it had 2 flat batteries. These were changed and it still did not work.
A complaint brought the promise of a replacement. After 2 more comlaints that the replacements had not arrived a parcel did arrive but contained 2 flashing lights - not what I had ordered.