Vansuny 64GB USB Flash Drive
Score: 58/100
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 Vansuny 64 GB USB 3.0 drive combines a rugged all-metal body with waterproof, dust-proof and shock-proof ratings, making it ideal for harsh environments. Real-world transfer speeds fall short of the advertised figures, and the lack of an LED may be a minor inconvenience.
| Attribute | | |
|---|---|---|
64 GB | 128 GBbest | |
35 MB/s | 130 MB/sbest | |
29 MB/sbest | — | |
— | 60 monthsbest | |
| ↓ lower better | 9 gbest | 17.35 g |
| ↓ lower better | 48.26 mmbest | 60.6 mm |
| ↓ lower better | 12.19 mmbest | 16.2 mm |
| ↓ lower better | 2.54 mmbest | 9.7 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Storage(1) | ||
Capacity (GB) | 64 GB | 128 GB |
Performance(1) | ||
Read Speed (MB/s) | 35 MB/s | 130 MB/s |
Physical(5) | ||
Weight (g) | 9 g | 17.35 g |
Length (mm) | 48.26 mm | 60.6 mm |
Width (mm) | 12.19 mm | 16.2 mm |
Height (mm) | 2.54 mm | 9.7 mm |
Material | metal | Metal |
Connectivity(1) | ||
USB Interface | USB 3.0 | USB-C/USB-A 3.2 Gen1 |
Compatibility(1) | ||
Operating System Compatibility | Windows, macOS, Linux | Android, Windows, macOS |
Products in the top-left offer the best value (high score, low price).
Reviewers commend the metal housing and verified waterproof claim, noting real-world read speeds around 35 MB/s and write speeds of 28-30 MB/s, while pointing out the gap between advertised and actual performance.
Users love the durability and compact size, but often mention slower-than-advertised speeds and the need to dry the drive after water exposure.
“Absolutely amazing... I haven't seen such a stick till now.”
“Perfect for photos”
“No cap to lose”
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.
