Micro SD Card Class 10 U3 A2 V30 – 2GB to 256GB | amzwn
Micro SD Card Class 10 U3 A2 V30 – 2GB to 256GB | amzwn
amzwn High-Speed Micro SD / TF Memory Card – 2GB to 256GB
Upgrade your device's storage with the amzwn Micro TF/SD Memory Card — a plug-and-play solution engineered for high-speed read and write performance. Whether you're expanding storage on a smartphone, tablet, action camera, dashcam, drone, or digital device, this card delivers reliable performance across a wide range of capacities from 2GB up to 256GB.
Made in Mainland China.
Key Features
- Plug & Play — No additional software required; simply insert and start using.
- High-Speed Performance — Supports 4K video recording (32–256GB variants: write speed 30–80 MB/s, read speed 40–129 MB/s).
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Multiple Speed Classes Available:
- C10, U3, A2, V30 (32/64/128/256GB) — 4K capable; requires USB 3.0+ reader for speed testing.
- C10, U1, V10 (8/16GB) — 1080p video; 10 MB/s+.
- C6, U1 (2/4GB) — Photo storage; 6 MB/s+.
- Wide Compatibility — Works with smartphones, tablets, cameras, MP3/MP4 players, dashcams, drones, speakers, robots, and more.
- Reliable & Verified — Supports H2testw testing; ensures damaged sector area is less than 4%.
- Wide Temperature Range — Operating: 0°C to 60°C | Storage: -20°C to 85°C.
Specifications
| Type | TF / Micro SD Card |
| Capacities | 2GB, 4GB, 8GB, 16GB, 32GB, 64GB, 128GB, 256GB |
| Class Level | C10 |
| UHS Level | U3 |
| Application Performance | A2 |
| Video Speed Class | V30 |
| Operating Temperature | 0°C – 60°C |
| Storage Temperature | -20°C – 85°C |
Capacity Note
Flash memory uses decimal arithmetic (1 GB = 1,000 MB), while operating systems use binary arithmetic (1 GB = 1,024 MB). This means the usable capacity displayed on your device may appear slightly lower than the labeled capacity — this is completely normal and not a defect.
- 2GB ≈ 1.5 – 1.86 GB usable
- 4GB ≈ 3.5 – 3.75 GB usable
- 8GB ≈ 7 – 7.45 GB usable
- 16GB ≈ 14 – 14.9 GB usable
- 32GB ≈ 28 – 29 GB usable
- 64GB ≈ 58 – 59 GB usable
- 128GB ≈ 95 – 119 GB usable
- 256GB ≈ 230 – 238 GB usable
Recommended Format: exFAT for 64GB, 128GB, 256GB | FAT32 for 2GB, 4GB, 8GB, 16GB, 32GB
Important: Check Your Device's Supported Capacity
Before purchasing, please confirm that your device supports the capacity you intend to buy. Inserting a card with a capacity exceeding your device's supported range may prevent the card from functioning — this is a device compatibility limitation, not a product defect.
What's in the Box
- 1 × Micro TF/SD Memory Card
- 1 × Retail Package
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Frequently Asked Questions
Q: What devices are compatible with this Micro SD / TF memory card?
A: This Micro TF/SD card is compatible with a wide range of devices including smartphones, tablets, laptops, dashcams, action cameras, drones (UAVs), MP3/MP4 players, digital cameras, surveillance systems, speakers, and robots — virtually any device with a Micro SD or TF card slot.
Q: Why does the card show less storage than the labeled capacity on my device?
A: This is due to the difference between decimal (manufacturer) and binary (OS) measurement systems. For example, a 128GB card may display as 95–119GB on your device. This is completely normal across all memory cards and is not a defect.
Q: Do I need to format the card before use?
A: For 64GB, 128GB, and 256GB cards, format using exFAT. For 2GB, 4GB, 8GB, 16GB, and 32GB cards, use FAT32. Many devices will prompt you to format on first insertion — always follow your device's recommended format for best results.
Q: What read and write speeds can I expect from the 128GB or 256GB variant?
A: The 32–256GB cards (Class 10, U3, A2, V30) support write speeds of 30–80 MB/s and read speeds of 40–129 MB/s. To achieve maximum speeds during testing, use a USB 3.0 or higher card reader.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.