Has improvements over its predecessor, the Opendime.
Opendime could be spent from once, then the private key was known. Satscard has multiple spending slots.
Current price of Opendime is about $23 (in packs of 3). Satscards are as cheap as $7.
Opendimes are PCB with surface mount components and dont stack well. Satscards are flat, stackable, customizeable, and have an NFC interface instead of USB.