Yes, the SanDisk Extreme microSDXC UHS-I 128GB is compatible with the Sony A6700.
Sony A6700 has a full-size SD card slot. SanDisk Extreme microSDXC UHS-I 128GB fits via the bundled microSD-to-SD adapter. SanDisk Extreme microSDXC UHS-I 128GB is V30 class. Clears: XAVC S HD (100 Mbps, requires U3). Does not meet the floor for: XAVC HS 4K (280 Mbps, requires V60); XAVC S 4K (280 Mbps, requires V60); XAVC S-I 4K (600 Mbps, requires V90).
Limitation
Cannot record XAVC HS/S 4K (280 Mbps, requires V60) or XAVC S-I 4K (600 Mbps, requires V90) -- this card is V30 class. The bundled microSD adapter provides physical fit only; it does not change the card's class rating. Works for XAVC S HD only.
“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:
High confidence