Cell Phone Cellular Signal Booster Repeater GSM 850MHz LTE 1700Mhz 3G Dual Band Amplifier install Set Type: Install Kit Compatible Phone Manufacturer: Phonetone Ltd. Support Network: Network works on 850/2100mhz frequency Coverage: 1000-2000sqm Frequency: 850/2100mhz Gain: 60 dB Connector: N female on both ends Features: small size,wireless