
SSK Dual USB-C 128GB
Score: 73/100
Techkey USB Flash Drive 128GB
Score: 79/100Rankings

The Techkey 128 GB MFi-certified flash drive offers versatile three-in-one connectivity and a rugged metal build, delivering fast USB 3.0 speeds. Its main drawbacks are the mandatory iOS app and the lack of detailed size/weight specs. Ideal for travelers and iOS users who need a durable, cross-platform backup solution.

The SSK 128 GB dual USB-C/A drive promises ultra-fast 550 MB/s reads and a waterproof, shock-resistant metal case. In practice it overheats and can throttle, with hinge durability concerns. Fits casual photographers needing occasional high-speed transfers.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 128 GBbest | |
550 MB/sbest | 80 MB/s | |
520 MB/sbest | 40 MB/s | |
| ↓ lower better | 37 gbest | — |
— | 2 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 550 MB/s | 80 MB/s |
Write Speed (MB/s) | 520 MB/s | 40 MB/s |
Connectivity(2) | ||
USB Version | USB 3.2 Gen 2 | USB 3.0 |
Interface | USB-A 3.2 Gen 2 and USB-C 3.2 Gen 2 | USB 3.0, Lightning, USB-C |
General(1) | ||
OS Compatibility | Computers, smart TVs, Android phones, iPhone 15, iPads, laptops, MacBooks | iOS, Android, macOS, Windows |
Build & Design(2) | ||
Dimensions (L×W×H) (mm) | 78.0×20.5×8.6 mm mm | 3.94 x 0.03937 x 5.43 inches mm |
Material | High-grade zinc alloy | Metal |


Products in the top-left offer the best value (high score, low price).

Professional reviewers, notably a Critical Reviews YouTube analysis, criticize the SSK drive for severe overheating, inconsistent sustained speeds, high power draw on iOS devices, and fragile USB-C hinge, concluding that despite its premium feel and advertised peak performance, the product suffers from reliability issues that outweigh its advantages.
Everyday users praise the dual-connector convenience and the solid, premium feel of the metal housing, but common complaints focus on rapid heating, speed throttling after short use, hinge durability problems, power-draw warnings on iPhone 15, and occasional early failures, making the drive suitable only for occasional light transfers.

“USB 3.0 speed is very fast on computers.”

“NWT, ideal for travel.”


Professional reviewers highlight the drive's very fast USB 3.0 performance and the convenience of having Lightning, USB-C and USB 3.0 ports in a single, rugged package, while noting that the mandatory BLANBOK+ app on iOS adds a setup step and that independent testing is limited.
Everyday users praise the drive for quick, one-click backups and seamless cross-platform file transfers, especially while traveling, and they value the durable metal build; no major complaints are repeatedly mentioned beyond the required app for iOS.