Introducing TOP608BT: Easy Setup RTK GNSS Receiver with Centimeter-Level Accuracy for Laptops, Tablets, and Phones

Unlike those survey RTK GNSS, TOP608BT is a very easy to setup RTK GNSS receiver. Usb and bluetooth dual interfaces. It brings the centi-meter level positioning accuracy(1.4cm) to your laptops, tablets and phones. The price is also reasonably low. Check it out here