The ECTACO Partner ES300T is an English/Spanish talking electronic dictionary. Its English-Spanish and Spanish-English dictionaries hold a total of 430,000 words. This model also provides an explanatory English dictionary of 12,000 words. Aside from the English voicing function, it provides English irregular verbs, the most popular American idioms, and a 12-topic English-Spanish phrasebook. With about 5,000 entries in its TOEFL dictionary, this handheld device will also prove a great help to those getting in shape for the exam. The examination section offers you the option to test your knowledge of any of the newly acquired words. This ECTACO Partner features all the traditional ECTACO handhelds' features you have come to expect including instant reverse translation, dictionary Look-up and Fuzzy search, advanced word recognition and a bilingual interface. Plug & Play LaCie Shortcut Button 1TB = 1000GB Hard Drive Capacity 7200 RPM 16MB (or greater) Cache Buffer eSATA, FireWire 800/400 and USB 2.0 and 1.1 Interface Up to 115MB/sec Burst Transfer Rate with eSATA Up to 85MB/sec Burst Transfer Rate with FireWire 800 Up to 40MB/sec Burst Transfer Rate with FireWire 400 Up to 35MB/sec Burst Transfer Rate with USB 2.0 System Requirements - Windows 2000/XP/Vista; Mac OS X 10.2.8 (10.3 for eSATA) or higher; Available eSATA, FireWire 800/400 or USB 2.0 port Approximate Unit Dimensions - 1.7(W) x 6.3(H) x 6.8(D) Approximate Unit Weight - 3.31 pounds