Yes, the Delkin Devices PRIME SD V60 128GB is compatible with the Panasonic Lumix S5 IIX.
Delkin Devices PRIME SD V60 128GB is V60 class. Clears: MP4 4K30 LongGOP (72 Mbps, requires V10); MOV 4K/C4K LongGOP (200 Mbps, requires V30); MOV 4K/C4K ALL-Intra (400 Mbps, requires V60). Does not meet the floor for: MOV 4K/C4K ALL-Intra (top tier) (600 Mbps, requires V90).
Limitation
Does not meet Panasonic S5 IIX's 4K60 All-I mode (requires Video Speed Class V90, 90 MB/s guaranteed floor) -- this card is V60 class (60 MB/s guaranteed). Works for 4K30 and all lower-bitrate SD-slot modes.
“Panasonic Lumix S5 IIX spec sheet: SD slots compatible with UHS-I/UHS-II Speed Class 3 and UHS-II Video Speed Class 90 standard SDXC memory cards.”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)