
Corsair Flash Survivor Stealth 128GB Black
Score: 71/100
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 Corsair Flash Survivor Stealth 128 GB is a rugged USB-3.0 drive featuring aircraft-grade aluminum housing, 200 m waterproof rating, and 1500 G shock resistance. Its write performance is inconsistent and the long, protruding shape can be cumbersome. Best suited for outdoor workers and travelers needing durable storage.
| Attribute | ![]() | ![]() |
|---|---|---|
128 GBbest | 128 GBbest | |
— | 80 MB/sbest | |
50 MB/sbest | 40 MB/s | |
| ↓ lower better | 36.3 gbest | — |
5 yearsbest | 2 years |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Read Speed (MB/s) | 82-241 MB/s | 80 MB/s |
Write Speed (MB/s) | 50 MB/s | 40 MB/s |
Connectivity(1) | ||
Interface | USB Type-A | USB 3.0, Lightning, USB-C |
General(1) | ||
Warranty (years) | 5 years | 2 years |
Build & Design(2) | ||
Dimensions (L×W×H) (mm) | 76.2×25.4×25.4 mm mm | 3.94 x 0.03937 x 5.43 inches mm |
Material | aluminum | Metal |

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

Professional reviewers commend the Corsair Survivor Stealth for its rugged aluminum build, 200 m waterproof rating, and 1500 G shock resistance, noting it as a solid choice for demanding environments. They also acknowledge the USB 3.0 speed boost over older models but caution that real-world write performance can be erratic and that the uncapped, bulky form factor may be inconvenient for some users.
Everyday users love the drive's ability to survive water, drops, and rough handling, often sharing stories of it surviving submersion or being dropped from heights. However, they are repeatedly disappointed by slower-than-expected transfer speeds and the easy-to-lose cap, and many find the long, protruding shape cumbersome for regular laptop use.

“well built, reliable, fast, and reasonably priced”

“sturdy feeling”

“USB 3.0 speed is very fast on computers.”




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.