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Twenty-five small black microSD cards with one black USB card reader

SanDisk

SanDisk microSDHC Class 4 16 GB 25 Pack with Reader

SKU CH-Q3VX-F8EST

Bulk pack of 25 microSDHC cards with 16 GB capacity and Class 4 speed, supplied with protective cases and a reader

  • TypemicroSDHC
  • Card typeMicroSD
  • Capacity16GB
  • Speed Class RatingClass 4
  • 25 cards and one reader in a single pack
  • Class 4 rating delivers up to 20 MB/s read and 5 MB/s write
  • Water, shock, vibration, X-ray, magnet and impact proof
  • Cards operate from -25 °C to 85 °C
  • 16 GB capacity per card suits cameras, phones and tablets

16 GB Class 4 microSDHC bundle

This pack contains twenty-five 16 GB microSDHC cards rated Class 4 for standard-speed capture. Each card works with microSDHC-compatible devices such as point-and-shoot cameras, smartphones, tablets and handheld consoles. A single USB reader is included so files can be transferred to a computer without extra hardware. The cards ship in individual plastic cases for organisation and protection.

Sustained write performance

Class 4 guarantees a minimum sequential write speed of 4 MB/s, which the manufacturer specifies as up to 5 MB/s write and up to 20 MB/s read. These rates are maintained during continuous recording rather than only in short bursts. The throughput suits standard-definition video and everyday photo capture but will not keep pace with high-bitrate or 4K workflows that demand faster sustained writes.

Durability and operating range

Cards are rated waterproof, shock-proof, vibration-proof, X-ray-proof, magnet-proof and impact-proof for rugged handling. They operate reliably from minus 25 °C to 85 °C, covering cold outdoor shoots and hot vehicle interiors. Power draw follows the microSDHC specification and is negligible during normal read or write activity, producing no audible noise.

Highlights

  • 25 cards and one reader in a single pack
  • Class 4 rating delivers up to 20 MB/s read and 5 MB/s write
  • Water, shock, vibration, X-ray, magnet and impact proof
  • Cards operate from -25 °C to 85 °C
  • 16 GB capacity per card suits cameras, phones and tablets

Specifications

BrandSanDisk
TypemicroSDHC
Card typeMicroSD
Capacity16GB
Speed Class RatingClass 4

Questions about this item

Does the Class 4 speed rating affect heat or power draw when the 25 cards run all day?

Class 4 specifies a minimum 4 MB/s write speed; power draw and heat depend on the host device, not the card itself.

What host device must I already own so the included reader can access these 16 GB microSDHC cards?

A device with a free USB port that supports microSDHC cards up to 16 GB.

Will the 25 MB/s read speed work reliably in an older camera that only accepts standard microSD cards?

The cards are microSDHC; they require a microSDHC-compatible host and will not function in legacy microSD-only slots.

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