About: http://webisa.webdatacommons.org/428765706

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Some models also come with battery back-up power, making it possible to use the amplifiers when at the park, on the beach, or other areas where hands-free use of a mobile phone may be helpful.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com