Which SD card do I need for my new hds9?
For mapping, backing up waypoints/routes/trails, saving screen shots, upgrading software, etc...
HDS-9 Gen-2= Two waterproof SD Digital Card slots - max 32GB per card.
HDS-9 Gen-3= Two waterproof Micro-SD Digital Card slots - max 32GB per card.
HDS-9 Carbon= Two waterproof Micro-SD Digital Card slots - max 32GB per card.