HIGH QUALITY 9DB ANTENNA DESIGNED & TESTED FOR AUS NETWORKS. Omni 9db Multi-band High-Gain Collinear Antenna 824-960MHz / 1710-2170MHz. 9dBi Antenna with a 5m cable and SMA connector. Rugged outdoor fibreglass antenna with stainless steel spring and stud mount (15.7mm).
The item looks well made, needed a unit to connect to iPhone total cost $390.
Unit was purchased to try to eliminate phone dropout in fringe areas, found it did no better than a friends Samsung mobile, whilst in the vehicle, so am very doubtful of any advantage gained at this quite substantial cost.
I would need some convincing to recommend the unit for the purpose claimed to anyone else.