SainSmart MetaPhix M2 Graphing Calculator

[rprosperi]

In a clearly targeted ad, Amazon suggests I check out this calculator:

http://www.amazon.com/gp/product/B00YMK0...em_1p_1_ti

Description of this $29.99 wonder includes:

• Generation of graphing functions handles calculus, engineering, trigonometric.
• Basic arithmetic operations using binary, octal, decimal, hexadecimal values.
• Built-in memory for storage and analysis; 64 x 32 pixel resolution LCD screen.
• Comes with detailed trouble shooting technical instruction and well packages.
• 1-year warranty and technical support dedicated from SainSmart

Anyone familiar with this machine, or even the manufacturer, which I assume is Chinese?
Edit: Wrong guess, looks French; I guess the name should have been the clue...

[renif]

Hello Bob,
that label SainSmart may feel french (missing just one letter T), but isn't that a common phenomenon of smart marketing? About a year ago I have purchased an Arduino Nano clone called SainSmart Nano from the same source. It didn't work exactly as expected, so I read the customer reviews, where someone stated the device were fabricated in China. (I know, one should read reviews before buying as that's their purpose...)
Concerning the calculator: no tutorials and no information about RAM size. So I guess, at about the same price any used and refurbished graphing calculator from the four main manufacturers TI, Casio, Sharp and HP may be the better deal for the typical user.

[Steve Simpkin]

Judging by the unique display format, number of keys and its function set, this appears to be a variation of the Sentry CA756 graphing calculator (aka Durabrand 828). Here is more information about the Sentry CA756.
Amazon:
http://www.amazon.com/Sentry-250-Functio...B001AMG0EC
RSKey (Mike Sebastian):
http://www.rskey.org/~mwsebastian/review..._ca756.htm
Forum (me):
http://www.hpmuseum.org/forum/thread-108...ght=sentry