70dB High Gain GSM 850MHz Mobile phone Cell phone signal booster repeater Wireless amplifier extender complete kit set Type: Boost cell phone signal in buildings Support Network: Any network with 850mhz frequency Coverage: 1000-2000sqm Frequency: 850mhz Gain: 70dB Connector: N Female on both ends Power Requirements: AC 100~240V / DC 6V 2.5A Features: Small size,wireless