G-Mouse Receiver-GU-502-EX Product Information: IP Rating: IPX5 Internal Memory: FLASH VCC(V): 5 GNSS Chip: MediaTek Mount: Adhesive + Magnetic Dimension: 45 x 38 x 13.5 mm External GPS receiver and OEM GPS receiver are two different types of GPS receivers commonly used in various applications such as automotive, marine, and aviation. An external GPS receiver is a standalone device that connects to a computer, smartphone, or other devices via Bluetooth or USB, providing GPS location data. It is commonly used as an accessory to improve GPS signal reception in areas with poor GPS signal strength. In contrast, OEM GPS receiver is a GPS module integrated into a device during its manufacturing process. OEM GPS receivers are used in devices such as navigation systems, smartphones, and tablets. They are designed to provide accurate and reliable GPS data, making them ideal for automotive and other applications.