BlueChart G2 HD Vision MARINE GPS MAP GARMIN GPS/SOUNDER. Please make sure your device has a card slot that accepts either SD or micro SD format before purchasing. Works in Garmin handheld GPS units or chartplotters that accept a micro SD card or full size SD card. You may use HomePort on your computer with this digital map to plan your routes/trips. At checkout, leave us a message indicating your GPS model. We will promptly answer any questions you might have. OpenStreetMap® is open data, licensed under the Open Data Commons Open Database License (ODbL) by the OpenStreetMap Foundation (OSMF) "Garmin" is a registered trademark Garmin Ltd This product is not affiliated with Garmin. Photos are for reference only