Overview
The SanDisk High Endurance 256GB microSDXC memory card — purpose-built for dash cams and home security cameras that record continuously. Rated for up to 20,000 hours of Full HD recording, with UHS-I speeds of up to 100MB/s read and 40MB/s write, and a V30/U3/Class 10 rating that keeps 4K and Full HD capture smooth. Water, shock, X-ray and temperature proof (−25°C to 85°C). Full-size SD adapter included. Brand new, sealed retail packaging.
✓ Engineered for continuous recording — up to 20,000 hours of write-and-rewrite endurance
✓ V30 / U3 / Class 10 — sustained 30MB/s minimum write for 4K and Full HD video
✓ Water, shock, X-ray and temperature proof — built for cars in summer and winter alike
✓ Full-size SD adapter included · Brand New — Retail Packaging
Ordinary microSD cards are designed for occasional photos and app storage — a dash cam or security camera writes video to the card all day, every day, and wears a standard card out long before its time. The SanDisk High Endurance 256GB microSDXC card is built for exactly that duty cycle: rated for up to 20,000 hours of continuous Full HD recording, it writes, overwrites and keeps going. UHS-I speeds of up to 100MB/s read and 40MB/s write, with a guaranteed V30/U3 floor of 30MB/s sustained write, keep 4K and Full HD footage recording without dropped frames. And because a card that lives on a dashboard sees temperature swings a phone never will, it is rated from −25°C to 85°C and is water, shock and X-ray proof. This is the 256GB version, brand new in sealed SanDisk retail packaging with the full-size SD adapter included, dispatched from our UK warehouse.
High Endurance Rating
Up to 20,000 Hours of Recording
Continuous video recording is the hardest workload a memory card faces — the same cells are written and rewritten thousands of times. SanDisk's High Endurance line is engineered specifically for this write-intensive cycle, and the 256GB capacity is rated for up to 20,000 hours of Full HD recording before wear becomes a factor. For a dash cam recording your daily commute or a security camera running around the clock, that translates to years of dependable loop recording — the footage you need is there when an incident actually happens, which is the entire point of the card.
V30 / U3 Speed Class
Smooth 4K and Full HD Capture
The card runs on the UHS-I bus with sequential read speeds up to 100MB/s and write speeds up to 40MB/s. More important for video work is the guaranteed floor: the V30 and U3 ratings certify that sustained write speed never drops below 30MB/s, which is what keeps 4K and Full HD recording free of dropped frames and corrupted segments. The 100MB/s read speed also means that when you do need to pull an hour of footage off the card, the transfer is quick.
Built for Harsh Conditions
Heat, Cold, Water, Shock, X-Ray
A dash cam card bakes on a dashboard in summer and freezes overnight in winter. The High Endurance card is rated for operation from −25°C to 85°C and storage from −40°C to 85°C, and it is water proof, shock proof and X-ray proof. The included full-size SD adapter (with write-protect switch) lets the same card work in cameras, laptops and card readers that take full-size SD.
Right choice if you…
✔ Run a dash cam, home security camera or CCTV system that records continuously
✔ Have worn out standard microSD cards with loop recording before
✔ Record in Full HD or 4K and need the V30/U3 sustained-write guarantee
✔ Need a card that survives dashboard heat and winter cold
✔ Want the SD adapter in the box for full-size SD devices
Look elsewhere if you…
✖ Shoot burst photography or 8K video — the Extreme PRO line has faster peak writes
✖ Need A2 app performance for running phone apps from the card
✖ Mostly transfer large files and want maximum read speed over endurance
SanDisk High Endurance 256GB — Technical Specifications
Brand
SanDisk
Model
High Endurance
MPN
SDSQQNR-256G-GN6IA
GTIN / UPC
619659173227
Capacity
256GB
Card type
microSDXC with full-size SD adapter
Bus / speed class
UHS-I · Class 10 / U3 / V30
Read speed
Up to 100 MB/s
Write speed
Up to 40 MB/s (minimum sustained 30 MB/s)
Endurance rating
Up to 20,000 hours Full HD recording
Durability
Water proof, shock proof, X-ray proof
Operating temperature
−25°C to 85°C
Storage temperature
−40°C to 85°C
Software
RescuePRO Deluxe data recovery download offer
Warranty
2-year SanDisk manufacturer warranty
In the Box
—
SanDisk High Endurance 256GB microSDXC memory card · Brand New — Retail Packaging (sealed)
—
Full-size SD adapter with write-protect switch
—
RescuePRO Deluxe data recovery software download offer
Frequently Asked Questions
Is the 256GB High Endurance card right for my dash cam?
Yes — this is exactly what the High Endurance line is designed for. The 256GB capacity is rated for up to 20,000 hours of Full HD recording, and the V30/U3 rating guarantees the sustained write speed that continuous loop recording needs. Check your dash cam's maximum su
✓ Engineered for continuous recording — up to 20,000 hours of write-and-rewrite endurance
✓ V30 / U3 / Class 10 — sustained 30MB/s minimum write for 4K and Full HD video
✓ Water, shock, X-ray and temperature proof — built for cars in summer and winter alike
✓ Full-size SD adapter included · Brand New — Retail Packaging
Ordinary microSD cards are designed for occasional photos and app storage — a dash cam or security camera writes video to the card all day, every day, and wears a standard card out long before its time. The SanDisk High Endurance 256GB microSDXC card is built for exactly that duty cycle: rated for up to 20,000 hours of continuous Full HD recording, it writes, overwrites and keeps going. UHS-I speeds of up to 100MB/s read and 40MB/s write, with a guaranteed V30/U3 floor of 30MB/s sustained write, keep 4K and Full HD footage recording without dropped frames. And because a card that lives on a dashboard sees temperature swings a phone never will, it is rated from −25°C to 85°C and is water, shock and X-ray proof. This is the 256GB version, brand new in sealed SanDisk retail packaging with the full-size SD adapter included, dispatched from our UK warehouse.
High Endurance Rating
Up to 20,000 Hours of Recording
Continuous video recording is the hardest workload a memory card faces — the same cells are written and rewritten thousands of times. SanDisk's High Endurance line is engineered specifically for this write-intensive cycle, and the 256GB capacity is rated for up to 20,000 hours of Full HD recording before wear becomes a factor. For a dash cam recording your daily commute or a security camera running around the clock, that translates to years of dependable loop recording — the footage you need is there when an incident actually happens, which is the entire point of the card.
V30 / U3 Speed Class
Smooth 4K and Full HD Capture
The card runs on the UHS-I bus with sequential read speeds up to 100MB/s and write speeds up to 40MB/s. More important for video work is the guaranteed floor: the V30 and U3 ratings certify that sustained write speed never drops below 30MB/s, which is what keeps 4K and Full HD recording free of dropped frames and corrupted segments. The 100MB/s read speed also means that when you do need to pull an hour of footage off the card, the transfer is quick.
Built for Harsh Conditions
Heat, Cold, Water, Shock, X-Ray
A dash cam card bakes on a dashboard in summer and freezes overnight in winter. The High Endurance card is rated for operation from −25°C to 85°C and storage from −40°C to 85°C, and it is water proof, shock proof and X-ray proof. The included full-size SD adapter (with write-protect switch) lets the same card work in cameras, laptops and card readers that take full-size SD.
Right choice if you…
✔ Run a dash cam, home security camera or CCTV system that records continuously
✔ Have worn out standard microSD cards with loop recording before
✔ Record in Full HD or 4K and need the V30/U3 sustained-write guarantee
✔ Need a card that survives dashboard heat and winter cold
✔ Want the SD adapter in the box for full-size SD devices
Look elsewhere if you…
✖ Shoot burst photography or 8K video — the Extreme PRO line has faster peak writes
✖ Need A2 app performance for running phone apps from the card
✖ Mostly transfer large files and want maximum read speed over endurance
SanDisk High Endurance 256GB — Technical Specifications
Brand
SanDisk
Model
High Endurance
MPN
SDSQQNR-256G-GN6IA
GTIN / UPC
619659173227
Capacity
256GB
Card type
microSDXC with full-size SD adapter
Bus / speed class
UHS-I · Class 10 / U3 / V30
Read speed
Up to 100 MB/s
Write speed
Up to 40 MB/s (minimum sustained 30 MB/s)
Endurance rating
Up to 20,000 hours Full HD recording
Durability
Water proof, shock proof, X-ray proof
Operating temperature
−25°C to 85°C
Storage temperature
−40°C to 85°C
Software
RescuePRO Deluxe data recovery download offer
Warranty
2-year SanDisk manufacturer warranty
In the Box
—
SanDisk High Endurance 256GB microSDXC memory card · Brand New — Retail Packaging (sealed)
—
Full-size SD adapter with write-protect switch
—
RescuePRO Deluxe data recovery software download offer
Frequently Asked Questions
Is the 256GB High Endurance card right for my dash cam?
Yes — this is exactly what the High Endurance line is designed for. The 256GB capacity is rated for up to 20,000 hours of Full HD recording, and the V30/U3 rating guarantees the sustained write speed that continuous loop recording needs. Check your dash cam's maximum su
Gallery
