Dimension of Module: 12.8X3.3X1.3cm(5.04X1.3X0.51in) | Operating voltage: 5V | A single module can drive a 8x 8 dot matrix common cathode | 64 fixed screw holes with 3mm in its diameter | Equipped with input and output interfaces, support for multiple modules to cascade

VK-162 GPS support for windows and for linux system, not for android and IOS system | The USB GPS is a great, easy, and an awesome solution for travelers.It works anywhere around the world. After you download the maps for the country traveling, it will pin point exactly where you are without having to pay any service. | For amateur radio operators who need accurate timing for digital communications, this is a unit that will help synchronize the timing for those modes. | This device is extremely accurate. It usually takes a couple of seconds to acquire the initial fix, followed up shortly by acquiring additional satellites for a more precise fix.