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Small black microSD card with red and grey label, shown beside full-size SD adapter

SanDisk

SanDisk High Endurance 256GB microSDXC 100MB/s 40MB/s SDSQQNR-256G-AN6IA memory card

SKU CH-6XDR-X81HB MPN SDSQQNR-256G-AN6IA

A 256 GB microSDXC card built for 20,000 hours of continuous Full HD and 4K recording at 40 MB/s write speed

  • Total capacity256 GB
  • Memory card formatMicroSD
  • Max read speed100 MB/s Read
  • Write throughput40 MB/s Write
  • Product typeMicroSD
  • Records 20,000 hours of continuous footage reliably
  • 256GB capacity stores more video between overwrites
  • Reads at 100 MB/s for fast file transfers
  • Writes at 40 MB/s supporting 4K and Full HD
  • Survives temperature, water, shock and X-ray exposure

256 GB microSDXC for continuous recording

The SanDisk High Endurance microSDXC card delivers 256 GB of storage built for dash cams, home monitoring and security systems. It is rated Class 10, U3 and V30 to sustain Full HD and 4K video capture without dropped frames. The bundled SD adapter lets you move the card between microSD and full-size SD slots.

20 000 hours of sustained write endurance

The card is engineered to withstand up to 20 000 hours of continuous writing and rewriting, far exceeding the demands of typical burst shooting. Its 40 MB/s sequential write speed maintains steady throughput during long recording sessions. Read speeds reach 100 MB/s so footage offloads quickly when the card is full.

Temperature, water, shock and X-ray proof

The ruggedised construction protects stored data against extreme temperatures, immersion, physical impact and airport security scanners. This resilience means the card survives daily vibration in a vehicle mount or outdoor housing. The included SD adapter adds mechanical convenience without reducing the card’s protective rating.

How it compares

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

Price $86.99
Pricier than about 69% of the 1,947 comparable items (median $46.99).
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $339.80 per TB
Cheaper than about 54% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Model nameSDSQQNR-256G-AN6IA
Part numberSDSQQNR-256G-AN6IA
Total capacity256 GB
Product typeMicroSD
Performance
Max read speed100 MB/s Read
Write throughput40 MB/s Write
Storage
Memory card formatMicroSD
Size & build
Shipping weight0.05 kg
Package size152 × 102 × 3 mm

Questions about this item

How much power does the SDSQQNR-256G-AN6IA draw when a dash cam writes to it continuously?

The card is rated for up to 20,000 hours of continuous recording, so it is designed to handle sustained write workloads without overheating or excessive power draw.

What host device or adapter must I already have to use this 256 GB microSDXC card?

You need a device with a microSDXC slot that supports UHS-I, or the included SD adapter for full-size SD slots.

Will this U3 V30 card work reliably in an older dash cam that only specifies Class 10?

Yes, the card carries Class 10, U3 and V30 ratings, so it is backward compatible with devices that require only Class 10 performance.

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