SanDisk
SanDisk SDSDUNR-256G-GN6IN 256GB Ultra SD Card Bundle
★★★★★
256GB of fast, durable storage paired with a multi-slot reader — everything you need to shoot longer and transfer faster without hunting for extra accessories.
$36.47*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.
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Overview
Key Features
Bundle includes (1) 256GB SD Ultra SanDisk Memory Card and (1) Everything But Stromboli Multi Slot Card Reader - Includes SD, Micro SD, M2, and MS slots for easy transfer
Compatible with Panasonic Lumix Cameras with SDXC card slot such as DC-FZ80, DC-ZS70, DMC-FZ300, DMC-LX10, DMC-TS5, DMC-TS4, DMC-ZS50, DC-TS7, DMC-FZ1000, DMC-TS30, DC-LX100 II, DMC-ZS100, DC-FZ1000 II, DMC-ZS60, DMC-TS25, DC-ZS80, DC-ZS200, DMC-LX7, DMC-FZ200, DMC-LX100, DMC-FZ2500, DMC-FZ70, DMC-TS20, DMC-ZS20, DMC-ZS45 and many other Panasonic Cameras (Check camera manual for compatibility)
Waterproof, temperature-proof, X-ray proof, magnet-proof, shockproof
High Speed transfer rates of up to 100MB/s - Twice as fast as ordinary SanDisk Ultra cards, allowing you to take pictures and transfer files quickly
Class 10 - Great choice for compact to mid-range point and shoot compact cameras
Specifications
Brand
SanDisk
Model
SDSDUNR-256G-GN6IN
Capacity
256GB
Read Speed
Up to 100MB/s
Speed Class
UHS-I / Class 10
Card Format
SDXC
Durability
Waterproof, temperature-proof, X-ray proof, magnet-proof, shockproof
Bundle Includes
256GB SanDisk Ultra SD Card, Everything But Stromboli Multi-Slot Card Reader (SD, Micro SD, M2, MS)
Compatibility
SDHC/SDXC devices; select Panasonic Lumix models with SDXC slot
Pros & Cons
👍 Pros
- The 256GB capacity means most photographers won't need to swap cards mid-shoot, even on full-day travel or event outings.
- Up to 100MB/s read speed significantly cuts down file transfer time when offloading large batches of images after a shoot.
- The five-point durability rating (waterproof, temperature-proof, X-ray proof, magnet-proof, shockproof) provides confidence during travel and outdoor work.
- The bundled multi-slot card reader handles SD, Micro SD, M2, and MS formats — genuinely useful for photographers juggling multiple devices.
- Genuine SanDisk Ultra branding and Class 10 / UHS-I rating ensures compatibility with the wide range of Panasonic Lumix SDXC-compatible cameras listed.
👎 Cons
- UHS-I speeds, while fast for this card class, won't satisfy cameras that support UHS-II — there's a ceiling on write performance that limits suitability for burst-heavy or high-bitrate 4K workflows.
- The included card reader is a bundled accessory, not a premium product — users needing faster USB 3.0 transfer speeds or sturdier build quality may eventually want an upgrade.
- Compatibility is camera-specific; the listing focuses on Panasonic Lumix models, and buyers using other brands should verify SDXC UHS-I compatibility independently.
- The 100MB/s speed is a read rating — write speeds are not specified, and real-world sustained write performance under camera burst conditions may be lower.
Frequently Asked Questions
What read speed does this card actually achieve, and does it matter for my camera?
The card reads at up to 100MB/s, which is twice the speed of standard SanDisk Ultra cards. For most point-and-shoot and mid-range mirrorless cameras shooting JPEG or compressed video, this is more than adequate. If your camera supports UHS-II or you're shooting high-bitrate 4K RAW, you'd want a higher-tier card — but for the Panasonic Lumix cameras listed in the compatibility notes, this card is well-matched.
Does the included card reader work with cards other than this SD card?
Yes. The Everything But Stromboli multi-slot reader included in the bundle accepts SD, Micro SD, M2, and Memory Stick (MS) formats, making it useful for transferring files from multiple device types — not just this card.
How durable is this card in the field?
The SanDisk Ultra 256GB carries waterproof, temperature-proof, X-ray proof, magnet-proof, and shockproof ratings. It's designed to survive the kind of incidental abuse that happens during travel and outdoor shooting — brief submersion, luggage X-rays, and rough handling.
Is 256GB enough for a full day of shooting?
For most compressed JPEG or Full HD video workflows on the Lumix cameras this card is designed for, 256GB is substantial — enough for thousands of high-resolution stills or several hours of HD video. Shooters recording long events continuously may want a backup card, but for typical day-trip or travel shoots, a single 256GB card is ample.
What class rating is this card, and what does that mean practically?
It's a UHS-I Class 10 card. Class 10 guarantees a minimum 10MB/s write speed, which meets the requirements for Full HD video recording on the supported Panasonic Lumix models. It's not rated for high-bitrate 4K or burst-heavy sports shooting, but it's well suited for the cameras it's designed to work with.
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