Class 4 2GB SD memory card with a read speed of 20MB/s and a write speed of 10MB/s for smooth data transfer. I mistakenly purchased this on October 16, 2025, thinking it was an MD card, so I am selling it. It is unopened. - Brand: GREEN HOUSE - Model: SD Memory Card - Capacity: 2GB - Transfer Speed (Read): 20 MB/s - Transfer Speed (Write): 10 MB/s - Class: Class 4 Thank you for looking.