The Universal Wireless Keyboard works with Palm and Pocket PC PDAs as well as Palm/Pocket PC based PDA/cell phones and smart phones. No more juggling different keyboards or worrying about switching products because it works with the world's most popular PDAs, PDA/cellular phones and smart phones. No more juggling different keyboards or worrying about switching products because the Universal Wireless Keyboard works with the world's most popular PDAs, PDA/cellular phones and smart phones. This wireless keyboard features a 210-degree rotating infrared arm (patent pending) to ensure constant connection. Do more anytime, anywhere with the Universal IR Wireless Keyboard! For a complete list of compatible PDAs, PDA/Cellular and Smart Phones, please go to our Universal Wireless Keyboard Compatibility Chart. Technical Specs Features Compatibility Works with most Palm OS5 and Pocket PC 2003 PDAs Landscape feature on PDAs with screen-flipping software (3rd party software required) Includes: Driver CD Other Key spacing: 18 mm Key travel: 3 mm Size Closed- 5.6" x 4.2" x 1" Open- 11.2" x 4.2" x .28" System Requirements Palm™ OS or Microsoft Pocket PC ™ 2000, 2002 or 2003 Windows 98, 2000, Me, XP No mirrors required Technical Battery powered Warranty Limited One Year Warranty Weight 12.3 oz Ideal for travel: Rugged, compact folding wireless IR (infrared) keyboard Comfortable: Full-size keys feel like a standard notebook keyboard Convenient: Easily enter data wirelessly into your PDA