Note: Due to unprecedented shortages and rapid price increases in the 2026 NAND flash storage market, all memory card prices are for reference only and subject to requotation.
*The MOQ is 100 units, with tray packaging provided by default. Contact us for free samples and technical support.
4GB SD Card Bulk
The 4GB SD card is a external storage solution compatible with any device that supports the SDHC format. Despite being a smaller capacity by today’s standards, the 4GB SD card still offers excellent value for devices that don’t need gigabytes of space. It is ideal for use in digital cameras, GPS units, MP3 players, point-of-sale systems, and embedded devices that require reliable storage. We offer this card in Class 6 and Class 10 speed version, ensuring fast and stable data transfer for everyday applications. Buy 4GB SD cards in bulk from Neomory today.
Specifications
Capacity: 4GB
Form Factor: SDHC
Speed Class: C6, C10
Write Speed: 6 – 12MB/s (C6), 10 – 18MB/s (C10)
Read Speed: 20 – 40MB/s (C6), 30 – 50MB/s (C10)
Controller: SMI or CBM
Nand Flash Type: MLC (Contact us for SLC)
Nand Flash Source: Samsung, Toshiba, Micron
Operating Temperature: -25°C to 85°C (-13°F to 185°F)
Storage Temperature: -40°C to 85°C (-40°F to 185°F)
Operating Voltage: 2.7V to 3.6V
Insertion/Removal Cycles: 10,000
Dimensions: 32 x 24 x 2.1 mm (1.26″ x 0.94″ x 0.08″)
Weight: 2g (0.07oz)
Warranty: 5-Year Limited Warranty
Verified Speed means that the real read and write performance of our memory cards matches the stated specifications, not just short-term “peak” speeds. By professionally matching controller chips with branded NAND flash, our products avoid sudden speed drops, write interruptions, and performance instability commonly caused by aggressive caching strategies or low-quality components. Every production batch undergoes real-world read and write verification, with a strong focus on sustained performance during continuous writing and repeated read/write cycles.
True Capacity means that the nominal capacity of a memory card accurately reflects its real, usable storage space. It does not mean “zero difference”; due to different calculation methods, the usable space shown on a computer is slightly less than the nominal value, which is normal and within industry standards. Neomory memory cards undergo strict capacity verification tests such as H2 and H5 to ensure stable read and write performance and full data integrity, even during long-term use or when the card is filled close to its maximum capacity.
Stable Reliability means that a memory card can deliver consistent, stable performance during long-term, repeated use. In many applications, stability matters more than extreme speed. We use mature controller solutions combined with branded NAND flash, and carry out basic stability verification and testing on every production batch. This helps minimize the risks of controller faults, inconsistent flash components, and compatibility issues, ensuring reliable performance.
Customization means we offer flexible solutions ranging from basic OEM services to fully customized storage products. We provide complete OEM and ODM services, including logo branding, casing and packaging design, and customized labeling specifications. Neomory also supports deep customization of key storage parameters such as capacity, speed class, controller solutions, flash memory type, and compatibility strategies. In addition, we provide data services such as data preloading and read-only locking based on actual application requirements and device usage scenarios.
Reviews
There are no reviews yet.