SanDisk Extreme PRO 128GB SDXC UHS-I Memory Card 250MB/s - SDSDXXJ-128G-GSCIN

SanDisk Extreme PRO 128GB SDXC UHS-I Memory Card
The SanDisk Extreme PRO 128GB, model SDSDXXJ-128G-GSCIN, is a high-performance full-size SD card designed for photographers, videographers, content creators, DSLR cameras, mirrorless cameras, and other compatible SDXC devices.
This newer Extreme PRO UHS-I version provides sequential read speeds of up to 250MB/s and write speeds of up to 120MB/s, giving users faster file transfers alongside strong recording performance. Sandisk
128GB Storage Capacity
With 128GB of storage, the card provides space for high-resolution photos, RAW files, 4K UHD footage, Full HD video, and other large media files.
Actual available capacity will be lower after formatting and system usage.
Up to 250MB/s Read Speed
SanDisk officially rates the SDSDXXJ-128G-GSCIN for sequential read speeds of:
Up to 250MB/s
SanDisk notes that this performance is achieved using proprietary technology that can exceed the standard 104MB/s UHS-I bus speed, so compatible hardware is required to reach the maximum advertised transfer rate. Sandisk
Up to 120MB/s Write Speed
Sequential write performance is rated at:
Up to 120MB/s
The higher write speed helps when capturing high-resolution photos, continuous bursts, and demanding video on compatible cameras. Sandisk
U3 Speed Rating
The Extreme PRO carries a:
UHS Speed Class 3 (U3)
rating.
U3 is designed for higher sustained recording workloads and is suitable for compatible high-resolution video applications. Sandisk
V30 Video Speed Class
The card also carries a:
Video Speed Class 30 (V30)
rating.
V30 indicates a minimum sustained write speed of 30MB/s, helping support reliable high-bitrate video capture on compatible equipment. Sandisk
Designed for 4K UHD Video
SanDisk specifically promotes the Extreme PRO SD UHS-I series for:
- 4K UHD video
- Slow-motion recording
- Continuous burst video
- High-resolution still photography
Actual supported resolution, bitrate, and frame rate depend on the camera and recording format. Sandisk
Ideal for Burst Photography
Fast write performance makes the card suitable for photographers capturing multiple high-resolution frames in quick succession.
It is particularly useful for sports, wildlife, events, travel, and other situations where continuous shooting is important.
UHS-I Interface
The card uses the:
UHS-I interface
It is a standard full-size SDXC card and is compatible with supported SDXC equipment. Sandisk
Built for Durability
SanDisk's current specifications describe this Extreme PRO generation as:
- Drop proof
- Waterproof
- Shock proof
- Humidity proof
It also uses NAND flash technology designed for durable storage. Sandisk
Compact Standard SD Size
SanDisk lists dimensions of approximately:
2.03 × 23.88 × 31.75mm
with a weight of approximately:
1.67g. Sandisk
Lifetime Limited Warranty
SanDisk lists the SDSDXXJ-128G-GSCIN with a:
Lifetime Limited Warranty
Warranty terms and availability can vary by country or region. Sandisk
Key Features
- Brand: SanDisk
- Series: Extreme PRO
- Model Number: SDSDXXJ-128G-GSCIN
- Capacity: 128GB
- Card Type: SDXC
- Interface: UHS-I
- Maximum Read Speed: Up to 250MB/s
- Maximum Write Speed: Up to 120MB/s
- UHS Speed Class: U3
- Video Speed Class: V30
- 4K UHD Recording Support: Yes, with compatible devices
- Suitable for burst photography
- Suitable for high-resolution still photography
- Drop proof
- Waterproof
- Shock proof
- Humidity proof
- Dimensions: 2.03 × 23.88 × 31.75mm
- Weight: Approx. 1.67g
- Warranty: Lifetime Limited Warranty Sandisk
Compatibility
Compatible with devices supporting:
- SDXC
- UHS-I SDXC
Common compatible equipment includes DSLR cameras, mirrorless cameras, camcorders, laptops, card readers, and other devices with a compatible full-size SDXC slot. SanDisk lists SDHC and SDXC compatibility for the product family.

Ideal For
DSLR cameras, mirrorless cameras, 4K UHD recording, professional photography, RAW photography, continuous burst shooting, sports photography, travel photography, video production, and content creators.

Why Buy from QUTECH?
Genuine SanDisk products, competitive prices, fast delivery across Malé & Hulhumalé, ferry delivery available to other islands, and secure online shopping.