SanDisk Ultra 64GB
Score: 75/100
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 SanDisk Ultra 64 GB USB-3.0 flash drive delivers solid 130 MB/s read speeds, a convenient capless slide-out design, and built-in encryption and recovery software. Its write speed tops out at 40 MB/s and performance can drop on older USB-2.0 ports, while the 64 GB capacity may be limiting for larger libraries. Best suited for students and professionals needing portable, secure storage.
| Attribute | | |
|---|---|---|
64 GB | 128 GBbest | |
130 MB/sbest | 80 MB/s | |
40 MB/sbest | 40 MB/sbest | |
| ↓ lower better | 8.5 gbest | — |
5 yearsbest | 2 years |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Storage Capacity (GB) | 64 GB | 128 GB |
Performance(1) | ||
Read Speed (MB/s) | 130 MB/s | 80 MB/s |
Connectivity(1) | ||
Interface | USB Type-A | USB 3.0, Lightning, USB-C |
General(2) | ||
Warranty (years) | 5 years | 2 years |
OS Compatibility | Windows 10+, macOS 12+, Android 8+, iOS 13+, USB Type-A | iOS, Android, macOS, Windows |
Build & Design(1) | ||
Dimensions (L×W×H) (mm) | 69.09×22.1×9.91 mm mm | 3.94 x 0.03937 x 5.43 inches mm |
Software(1) | ||
Included Software | SecureAccess, RescuePRO Deluxe, SanDisk backup app | BLANBOK+, U‑Disk |
Products in the top-left offer the best value (high score, low price).
Professional reviewers consistently commend the SanDisk Ultra 64GB USB-A flash drive for its solid 130 MB/s read performance, reliable 40 MB/s write speed, and the added value of security and recovery software. They note the longer 5-year warranty as a differentiator, while pointing out the lack of detailed endurance data and the drop in speed on legacy USB 2.0 ports.
Everyday users love the fast read speeds and the generous 64 GB capacity for media and backups, highlighting the convenient capless slide-out design and the usefulness of SecureAccess. Common complaints revolve around slower write speeds, occasional recognition hiccups on older ports, and the fact that formatted usable space is a few gigabytes less than the advertised capacity.
“up to 100-130MB/s feels blazing for files/movies”
“full movie in <40s”
“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.
