The included 16MB xD-Picture Card provides abundant memory and the durability & reliability you need in a removable media card, while superb sound, a large backlit LCD, file management options and other features supply the professional performance you seek in an easy to use, sleek and stylish package. A full dot, backlit LCD provides for easy viewing, even in bright conditions, for clear and quick viewing of recording times, battery life status and more Recording Format - DSS (Digital Speech Standard) Save files in high-compression DSS format using the included DSS Player software Manage audio files in up to 5 customizable folders Use the easily accessible Erase button to quickly erase single files or entire folders Switch between Conference and Dictation settings Compatible with voice recognition software 2 AAA batteries or 2 Ni-MH rechargeable batteries Enjoy efficient battery power with up to 20 hours provided Compact and lightweight design for easy portability Input Level - -70 dBv PC Interface USB Folders Messages - 5 folders, 199 messages per folder Practical Maximum Output - 220 mW or more Speaker Built-in - 28mm round dynamic speaker Microphone & Earphone Jack - 3.5mm mini-jack System Requirements - Microsoft Windows Me, 2000 Professional, XP Professional, Home Edition, Mac OS 10.1, 10.2, 10.3, 10.4, Intel Pentium II class 333 MHz processor or faster (Processor 500 MHz or faster is recommended), 128MB RAM or more (256MB or more is recommended), Creative Labs Sound Blaster 16 or 100% compatible card, 800 x 600 pixels, 256 colors or more, 2x or faster CD-ROM, CD-R, CD-RW, DVD-ROM drive, One or more free USB ports, Microphone input and earphone output or speaker, Earphone output or speaker Dimensions - 4.3 x 1.9 x 0.7 inch Weight - 101 grams