Thank you for viewing! This product is brand new and unused. Connectors: SMA female; Amplifier Gain: 27dB; GPS Center Frequency: 1575.42MHz Fast GPS signal capture, low power consumption, strong anti-interference performance, and a wider operating voltage range. The magnetic base allows for easy installation on any metal surface. No power adapter is required. It is powered by the head unit and your car's own charger. Records data such as driving trajectory, speed, longitude, and latitude. All of this data can be viewed in the specified player. *This product is new and unused, but it has been opened for photography. Thank you for your understanding. O-1