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Five small black microSD cards with red labels in a clear plastic case

SanDisk

SanDisk Extreme PRO microSDHC 64GB 95MB/s U3 Pack of 5

SKU CH-RQJ7-AR8KA

Five 64 GB microSDHC cards deliver 320 GB total storage with 95 MB/s read speeds and U3 performance for 4K video

  • typemicroSDHC
  • Capacity320GB (64GB x 5)
  • Speed Class RatingClass 10
  • Read Speed95 MB/s
  • Five cards deliver 320 GB total storage
  • UHS-I U3 rating supports 4K Ultra HD video capture
  • Read speeds up to 95 MB/s accelerate file transfers
  • Write speeds up to 90 MB/s sustain burst-mode shooting
  • Class 10 speed class ensures smooth Full HD recording

Five-card bundle for multi-device workflows

This pack contains five SanDisk Extreme PRO microSDHC cards, each offering 64GB capacity for a total of 320GB. They suit photographers and videographers who need reliable storage across several cameras, drones or action cams. The UHS-I interface and U3 rating support 4K Ultra HD video recording. Users managing large media libraries across devices benefit from the volume.

U3 speed class enables sustained 4K capture

The Class 10 and UHS Speed Class 3 ratings guarantee minimum write performance for uninterrupted 4K Ultra HD and Full HD recording. Read speeds reach 95 MB/s, while write speeds reach up to 90 MB/s for rapid file offloading. These speeds reduce buffer clearing time during burst shooting. The bundled quantity multiplies total capacity without changing per-card performance.

Simple plug-in use with standard slots

Each card inserts directly into any microSDHC or microSDXC slot; no drivers or software are required. The cards are waterproof, temperature proof and shockproof for durability in harsh conditions. A common issue arises when a device only supports the older microSD standard, which cannot address 64GB capacities. Users must verify host compatibility before purchase.

Highlights

  • Five cards deliver 320 GB total storage
  • UHS-I U3 rating supports 4K Ultra HD video capture
  • Read speeds up to 95 MB/s accelerate file transfers
  • Write speeds up to 90 MB/s sustain burst-mode shooting
  • Class 10 speed class ensures smooth Full HD recording

Specifications

BrandSanDisk
typemicroSDHC
Capacity320GB (64GB x 5)
Speed Class RatingClass 10
Read Speed95 MB/s

Questions about this item

Will the U3-rated write performance need any firmware updates or card maintenance to stay at 90 MB/s?

No firmware updates or scheduled maintenance are required; the U3 speed class is a hardware rating that remains valid for the life of each 64 GB card.

What limit appears first when recording 4K video continuously across all five cards?

Each card caps sustained write speed at 90 MB/s, so the write-speed ceiling is reached before the 64 GB capacity fills during long 4K sessions.

How much heat or power draw should I expect when the pack is transferring files at 95 MB/s all day?

MicroSDHC cards draw very little power and generate negligible heat even at the rated 95 MB/s read speed, so all-day transfers stay cool and efficient.

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