Yes, the SanDisk Extreme microSDXC UHS-I 128GB works with the Sony A6700 — but only requires the bundled microSD-to-SD adapter (included with the card); clears.
Sony A6700 has a full-size SD card slot. SanDisk Extreme microSDXC UHS-I 128GB (real write speed 130 MB/s) fits via the bundled microSD-to-SD adapter and clears every recording mode including this camera's top-tier mode requiring Video Speed Class 90 (90 MB/s).
Conditions for compatibility
requires the bundled microSD-to-SD adapter (included with the card); clears every recording mode including the camera's V90-tier mode.
“le bit rate when recording Supported memory card XAVC HS 4K 280Mbps SDXC V60 or higher XAVC S 4K 280Mbps SDXC V60 or higher XAVC S HD 100Mbps SDHC/SDXC card (U3 or higher) XAVC S-I 4K 600Mbps SDXC V90”
Last verified:
Confidence: high confidence