For the following Walkman series, the maximum capacity for micro SD cards is 2TB:
- NW-A3x series (e.g. NW-A35, NW-A36, etc.)
- NW-A4 series
- NW-A20 series
- NWZ-A10 series
All Sony micro-SD cards currently available on the market are confirmed to be compatible.
Sony cannot guarantee full compatibility with cards from other brands.