The SDS is roughly the same size as the CYZ-10 — 7.4" (188mm) x 4.25" (108) x 1.8" (46mm) — and weighs less than 2.5 lbs (1.1 kg). It uses an XScale processor running at 300 MHz under the Microsoft Windows CE operating system. Cryptographic functions are performed by an internal KOV-21 crypto PC Card. The SDS includes 64 MB of RAM, 32 MB of flash read-only memory, a QWERTY keyboard, half-VGA color display, and a USB port. It also has a 6-pin connector for cabling to NSA standard fill connectors. The keyboard includes two zeroize buttons. It costs US$3700 each.