
Silicon Power Jewel J80 32GB
Score: 72/100
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 Silicon Power 32 GB Jewel J80 is a rugged, metallic USB 3.0 flash drive with waterproof, dustproof and vibration-proof protection. It lacks disclosed performance numbers, which may deter users needing verified speed. Suited for users who prioritize durability and key-chain convenience over raw transfer speed.
| Attribute | ![]() | ![]() |
|---|---|---|
32 GB | 128 GBbest | |
— | 80 MB/sbest | |
— | 40 MB/sbest | |
| ↓ lower better | 5.9 gbest | — |
— | 2 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 32 GB | 128 GB |
General(1) | ||
OS Compatibility | PC, Mac | iOS, Android, macOS, Windows |
Build & Design(2) | ||
Dimensions (L×W×H) (mm) | 17.8x2.5x43.2 mm | 3.94 x 0.03937 x 5.43 inches mm |
Material | Metallic | Metal |
Features(1) | ||
Hardware Encryption | false | true |


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

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.
“USB 3.0 speed is very fast on computers.”

“NWT, ideal for travel.”

