Are these cards guaranteed not fakes

I had no reason to think that they were fake. Worked very well. My Canon 5D cannot make full use of their 300m/b speed. I didn't know that at the time of purchase.

Will these work with a Lumix G7?

Yes, should work fine. The G7 takes SDHC & SDXC SD cards. I used these Lexar regularly on an Antarctic trip a couple of years ago, downloading cards used at the end of the day....took over 7000 JPG shots (also saved on card in RAW). They never missed a beat....often took burst shots of birds and whales up to 20 at a time!! They warmed up in the evening when transferring to back-up though!! Can recommend them!

Can this work with the canon m6 Mk ii please?

Yes, Canon M6 MkII support 1 x SD, SDHC, SDXC (UHS-II) memory card

Why is the write speed not stated clearly as its very concerning and a key fact.

How could any customers know why a manufacturer has done anything? If it’s ambiguous I think an intelligent person can work it why that might be. Sony Tough 300 / 299 far superior to this card. Yellow end goes into slot. Worth the extra expense imho.

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Lexar High-Performance 800x SD Card 256GB, SDXC UHS-I Memory Card BLUE Series, Up to 120MB/s Read, Up to 45MB/s Write, for Point-and-shoot Cameras, Mid-range DSLR, HD Camcorder (LSD0800256G-BNNAG)

Lexar High-Performance 800x SD Card 256GB, SDXC UHS-I Memory Card BLUE Series, Up to 120MB/s Read, Up to 45MB/s Write, for Point-and-shoot Cameras, Mid-range DSLR, HD Camcorder (LSD0800256G-BNNAG)

Product ID: 478212131

Details

Brand
Lexar
Compatible devices
Camera
Flash memory type
SDXC
Memory storage capacity
256 GB
Model name
B0B55XLWCQ

⚡120MB/s read speed

💾256GB storage capacity

🛡️Water & shock proof durability

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Description

📸 Capture More, Wait Less — Power Your Creativity with Lexar 800x!

PRO GRADE DURABILITY - Built to withstand water, shock, vibration, temperature extremes, and X-rays for worry-free shooting.
MASSIVE 256 GB STORAGE - Store thousands of high-res photos and hours of 4K UHD video without compromise.
4 K UHD FULL HD READY - Capture stunning 1080p and 4K UHD videos with Class 10, U3, V30 performance standards.
BLAZING FAST TRANSFERS - Up to 120MB/s read speeds to keep your workflow seamless and efficient.
EFFORTLESS WORKFLOW BOOST - High-speed file transfers accelerate your editing and sharing process, so you never miss a moment.

The Lexar High-Performance 800x SDXC UHS-I 256GB card delivers up to 120MB/s read and 45MB/s write speeds, optimized for point-and-shoot cameras, mid-range DSLRs, and HD camcorders. Engineered with Class 10, U3, and V30 standards, it supports smooth 4K UHD and Full HD video capture. Designed for professional durability, it is water, shock, vibration, temperature, and X-ray proof, backed by a 10-year limited warranty to ensure reliable performance in any adventure.

Specifications

ASIN	B0B55XLWCQ
Best Sellers Rank	536 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 8 in SD Cards
Brand Name	Lexar
Colour	Blue
Compatible Devices	Camera
Customer Reviews	4.6 4.6 out of 5 stars (60)
Flash Memory Type	SDXC
Hardware Connectivity	SDXC, Secure Digital Card
Item Weight	8 Grams
Manufacturer	Lexar Co., LTD
Manufacturer Part Number	LSD0800256G-BNNAG
Media Speed	45.0
Memory Storage Capacity	256 GB
Model Name	B0B55XLWCQ
Model Number	LSD0800256G-BNNAG
Product Features	durability, high quality
Product Warranty	10-year limited warranty
Read Speed	120 Megabytes Per Second
Secure Digital Association Speed Class	Class 10
Unit Count	1.0 count
Warranty Type	Limited

Reviews

B**N

N/A

Great value for money

7.10.2023

Ş**R

Çok iyi ve hızlı çalışıyor

1.09.2025

V**O

Diría que es mi tarjeta preferida

26.01.2024

E**E

Efficace

9.01.2024

A**R

That's marketed as go pro accessory and it doesn't fit

9.08.2024

J**C

Cette carte sd fonctionne très bien.

21.04.2024

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In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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