KOOTION Retractable 128GB
Score: 46/100
Lexar D400 128GB
Score: 81/100Rankings
The Lexar JumpDrive D400 128 GB offers a metal swivel design, dual USB-C/USB-A connectivity and built-in 256-bit AES encryption, making it a secure and versatile portable storage option. Real-world performance is solid for reads, but write speeds lag and occasional USB-2.0 operation can be a drawback.
The KOOTION 128 GB Retractable USB 3.0 flash drive combines a cap-less retractable slider with decent read performance and broad device compatibility. It is an affordable option for students and casual users, though write speeds and actual usable capacity are modest.
| Attribute | | |
|---|---|---|
128 GBbest | 128 GBbest | |
110 MB/s | 130 MB/sbest | |
40 MB/sbest | — | |
24 months | 60 monthsbest | |
| ↓ lower better | 9.07 gbest | 17.35 g |
| ↓ lower better | 280 mm | 60.6 mmbest |
| ↓ lower better | 19.9 mm | 16.2 mmbest |
| ↓ lower better | 1 mmbest | 9.7 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(1) | ||
Read Speed (MB/s) | 110 MB/s | 130 MB/s |
Warranty(1) | ||
Warranty Period (months) | 24 months | 60 months |
Physical(5) | ||
Weight (g) | 9.07 g | 17.35 g |
Length (mm) | 280 mm | 60.6 mm |
Width (mm) | 19.9 mm | 16.2 mm |
Height (mm) | 1.0 mm | 9.7 mm |
Material | ABS plastic | Metal |
Connectivity(1) | ||
USB Interface | USB 3.0 | USB-C/USB-A 3.2 Gen1 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux, Android, PC, printer, projector, car audio, game console, smart TV | Android, Windows, macOS |
Products in the top-left offer the best value (high score, low price).
Professional reviewers and editors praise the KOOTION drive for its budget-friendly price, reliable USB 3.0 performance, and the convenience of its retractable slider, while cautioning that speed specifications can vary across listings.
Everyday users consistently commend the drive's fast read performance, sturdy retractable mechanism, and ease of use across devices, though they note slower write speeds and occasional receipt of USB 2.0 hardware.
“Perfect for school and work - fast and reliable.”
“Love the retractable design - no more lost caps!”
“Write speed is slow - only about 15 MB/s on my PC.”
Professional commentary emphasizes the Lexar D400's strong build quality, dual-connector flexibility, and cross-platform support, noting its rigorous testing and inclusion of DataShield encryption as positives. However, reviewers point out that the encryption is software-only and that the product lacks extensive third-party reviews, leaving some uncertainty about real-world performance consistency.
Everyday users generally appreciate the dual-connector design, metal durability, and keyring convenience, often noting that it works straight out of the box with Android phones and Windows PCs. Common complaints revolve around a tight USB-A connector, slower-than-expected write speeds, occasional defective units, and some drives operating at USB 2.0 speeds.
