This Leica GAT5 Antenna is a high-quality accessory for your GSM Modem Radio. It is designed to improve the radio's performance and range, making it ideal for use in topographic surveying. The antenna is made by Leica, a trusted brand in the surveying industry, and is manufactured in Switzerland. With this antenna, you can enjoy a better signal and improve your accuracy in your measurements. It is a unit type product and comes in a quantity of one. The Leica GAT5 Antenna is a reliable choice for anyone in need of a top-quality antenna for their GSM Modem Radio.