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Sony
Sony TOUGH SF-G Series UHS-II SD 128GB
$343
Released 2018
Best Memory Cards · head-to-head
Sony TOUGH SF-G Series UHS-II SD 128GB vs Delkin BLACK UHS-II SDXC V90 128GB
A sourced, side-by-side comparison. Delkin BLACK UHS-II SDXC V90 128GB is cheaper at $149.99. Every spec and price links to its source.
Delkin Devices
Delkin BLACK UHS-II SDXC V90 128GB
$149.99Cheaper
Released 2021
Which is better: the Sony TOUGH SF-G Series UHS-II SD 128GB or Delkin BLACK UHS-II SDXC V90 128GB?
The Sony TOUGH SF-G Series UHS-II SD 128GB wins 1 of the 1 specs we compare head to head; the other wins 0. The Delkin BLACK UHS-II SDXC V90 128GB is the cheaper at $149.99. Get the Sony TOUGH SF-G Series UHS-II SD 128GB for the stronger spec sheet, the Delkin BLACK UHS-II SDXC V90 128GB to spend less.
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Key specs, head to head
The numbers that decide it, drawn to scale — longer bar wins, the accent bar is the stronger figure.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Sony TOUGH SF-G Series UHS-II SD 128GB | Delkin BLACK UHS-II SDXC V90 128GB |
|---|---|---|
| US price | $343 | $149.99 |
| Brand | Sony | Delkin Devices |
| Released | 2018 | 2021 |
| Format | sd | sd |
| Capacity (GB) | 128 | 128 |
| Speed class | v90 | v90 |
| Max read (Mbps) | 300 | 300 |
| Max write (Mbps) | 299 | 250 |
| Application class | — | — |
| Warranty | 5 years limited | limited lifetime |
| Release | 2018 | 2021 |
Sources — Sony TOUGH SF-G Series UHS-II SD 128GB: amazon.com (verified 2026-06-19). Delkin BLACK UHS-II SDXC V90 128GB: bhphotovideo.com (verified 2026-06-19).
What's the difference between the Sony TOUGH SF-G Series UHS-II SD 128GB and Delkin BLACK UHS-II SDXC V90 128GB?
Where the two actually differ on the specs we track (2 of 7). Matching specs are omitted.
- Max write (Mbps): Sony TOUGH SF-G Series UHS-II SD 128GB 299 vs Delkin BLACK UHS-II SDXC V90 128GB 250
- Warranty: Sony TOUGH SF-G Series UHS-II SD 128GB 5 years limited vs Delkin BLACK UHS-II SDXC V90 128GB limited lifetime
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Sony TOUGH SF-G Series UHS-II SD 128GB
Only one outlet actually benchmarked the card. TechRadar's May 2025 SD card guide measured 251MB/s read and 246MB/s write and called them "very impressive", while praising the resin-moulded rugged build and flagging the price and the 128GB capacity ceiling. TechRadar does not state which capacity it tested (its spec box even lists the card type as SDHC, which cannot be right for 128GB), so the numbers are attributable to the SF-G TOUGH UHS-II line rather than verifiably to the 128GB trim. Engadget's 2018 launch piece is news, not a test: it confirms the durability claims and adds the missing write-protect switch and the $276 launch price for 128GB, but every speed figure in it comes from Sony. (2 sourced reviews, 1 lab-tested.)
Praised: Rugged sealed one-piece build: bend-proof, drop-proof, waterproof, dustproof; Measured 251MB/s read and 246MB/s write, described as very impressive; Built with professional use in mind, usable in harsh conditions.
Flagged: Costs noticeably more than rival cards, including the non-Tough version; No write-protect switch, a side effect of the sealed design; Capacity tops out at 128GB.
Delkin BLACK UHS-II SDXC V90 128GB
No sourced tester review yet.