Features:This antenna is suitable for cars， trucks， boats or other vehicle use.It improves cell phone voice and data reception， adding bars of signal to your phone and increased data transfer speeds.It also helps prevent dropped calls.It doesn't require a direct connection to your phone， but rather works wirelessly.It can also work for multiple users at the same time.Specification:Material: Plastic + aluminum alloyColor: BlackFrequency range: 900-1800MHzMax. gain: 7-8dBiBandwidth: 30MHzMax. input power: 60WConnector type: SMACable length: 3m / 9.84ftPackage Include:1 x GSM Magnetic Antenna(Long)NO Retail Box. Packed Safely in Bubble Bag.