Dynabook - FlashAir™ W-04 Wireless SD Card Specifications
FlashAir™ W-04 Wireless SD Card


  • SDHC 16GB, 32GB, 64GB
Speed Class
  • UHS Speed Class 3 (U3)
Read/Write Speed**
  • Read: 90MB/s, Write: 70MB/s
  • Compliant standard SD Memory Card Standard Ver.4.00
  • X-Ray Proof* (ISO7816-1 compliant)
  • *For the purpose of calculating read/write speed in this context, 1MB = 1,000,000 bytes
Compatible Cameras and Camcorders
Operating System
  • Windows XP/ Vista/7, MAC-PC, Android, iOS
  • Internet Explorer, Safari, etc
Wireless LAN Standard
  • IEEE802.11 b/g/n
Wireless LAN Security
  • WEP, TKIP, AES (WPA, WPA2) WPA2 Default
Login Support
  • Up to 7 users at one time
Applicable Data Formats
  • All data formats (ex: .jpg, .mpg, .raw etc)
Power Supply
  • 2.7 - 3.6V
Operating Temperature
  • -25°C to +85°C (Recommended)
Storage Temperature
  • -40°C to +85°C (Recommended)
Package Contents
  • FlashAir™ Wireless SD Card
  • 1 Year Limited Local Warranty

* Capacity is based on installed flash memory and not user available memory as part of the memory is used for management functions. Available user area are as listed above (1GB = 1,073,741,824 bytes). UHS Speed Class 3 is defined to be min 30MB/s data transfer speed of write and read speed between UHS compliant host device and card.

** The read/write speed varies depending on the conditions of the equipment to be used. 1 MB/s is calculated as 1,000,000 bytes/s.