Thinking about getting one of these - does anybody have any experience with this intercom system?

And can anybody tell me the difference between these 2 models:http://www.amazon.com/dp/B00BJGVUGM/ref=asc_df_B00BJGVUGM2500653?smid=ACW8M2QXR07XT&tag=pgmp-47-01-20&linkCode=asn&creative=395109&creativeASIN=B00BJGVUGM andhttp://www.amazon.com/UClear-Digital-HBC200-Bluetooth-Intercom/dp/B00BJGVU4O/ref=pd_sim_sbs_auto_3#productDetails

Is the first a wireless connection to the soakers, vs a wired connection on the second?