The Panasonic CompuVoice (JE-720U) is an arithmetic calculator with 8 digits precision and algebraic logic.It has 5 functions, 25 keys, and an LCD (liquid crystal) display and a voice synthesizer that resembles the voice of the late physicist Stephen Hawking.  The power source is 3 AA batteries (included).The instructions have seen better days but with care are still legible.  Otherwise the calculator seems to work fine.  The padded vinyl case is probably not original to the device, however. Shipped with USPS priority small flat-rate box.