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Small blue microSDHC memory card in bulk packaging

SanDisk

SanDisk microSDHC Class 4 4GB SDSDQ-004G memory card

SKU CH-BTQM-24C3J

A 4 GB microSDHC Class 4 card for media files in compatible mobile phones

  • Total capacity4 GB
  • Memory card formatMicroSD
  • Speed classClass 4
  • Product typeMicroSDHC
  • 4 GB capacity stores media-rich files
  • Class 4 speed rating supports everyday recording
  • microSDHC format fits compatible mobile phones
  • Newest SD flash memory standard at launch
  • Bulk pack includes one ready-to-use card

4 GB microSDHC Class 4 card

This 4 GB microSDHC card uses the Class 4 speed rating for basic storage in compatible mobile phones and other small devices. It is the newest standard of SD flash memory in a compact MicroSD form factor. Buyers who need higher capacity or faster sustained write speeds should look elsewhere.

Class 4 speed rating

The single specification that decides fit is the Class 4 rating which guarantees a minimum sequential write speed of 4 MB/s. This level suits standard-definition video recording and everyday file storage. It does not meet the requirements for full HD or higher bitrate capture.

Sustained write behaviour

Under continuous use the card maintains the Class 4 threshold so long recordings write without dropping below 4 MB/s. Performance stays steady rather than peaking in short bursts then falling off. The 4 GB capacity fills quickly during extended sessions.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 97% of the 1,947 comparable items (median $46.99).
Total capacity 4 GB
Lower than about 98% of the 1,132 comparable items (median 64 GB).

Specifications

Product
Brand nameSanDisk
Total capacity4 GB
Product typeMicroSDHC
Performance
Speed classClass 4
Storage
Memory card formatMicroSD

Questions about this item

How much media can the 4 GB capacity hold in a phone?

Four gigabytes stores roughly one thousand photos or several hours of standard-definition video on a compatible handset.

What does the Class 4 rating mean for transfer speed?

Class 4 guarantees a minimum sustained write speed of 4 MB/s, enough for basic photo capture and standard video recording.

Will this card fit the microSD slot on my device?

The microSDHC form factor fits any slot labelled microSDHC or microSDXC; it will not work in legacy microSD-only readers.

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