Senao Outdoor Antenna- F3/F9 Omni-Directional outdoor antenna is of high efficiency, stability and precision with specially designed. It is used for SN-258, SG-258, and suitable for SN-258PLUS, SG-258PLUS etc. over 10 different types communication equipment . This is for senao any phone SN258/SN258 PLUS /SN 358/SN358 PLU outdoor omni antenna to get handset to bese 15 km phone