Retro Review: Casio Cassiopeia PV-S400 Plus PDA - YouTube
Guinness World Records 2001: Most Powerful PDA - Casio Cassiopeia E-105 : r/OldHandhelds
1990's Blast from the Past! Casio E125 Cassiopeia PDA Windows CE handheld computer! - YouTube
IT-10M30B - Casio IT-10M30 Handheld Computer
Amazon.com: Casio PV-200 Pocket Viewer PC Companion : Office Products
Casio Z-7000 PDA Box | 102743785 | Computer History Museum
Personal Digital Assistant (PDA) device, "Casio Cassiopeia E-10 Pocket PC," 1998 - Museum of History and Industry - University of Washington Digital Collections