3g external antenna with bracket 1, Rubber or flexible plastic,Frequency: 433.92/900/ ... Gain:9-13dBi 3, Plug: SMA 3g external antenna with bracket:1, Rubber or flexible plastic,Frequency: 433.92/900/ ... RF receivers 3, Gain: 9-13dBi4, Wall mounting bracket: Stainless steel or painted bracket (non-rusting material)5, Working range: Over 150m ... , Connector: SMA (M) or others 3g external antenna with bracket