Notes:

An early scientific calculator with a fluorescent display.
According to this Vintage Calculators page site (link valid
20230408) this calculator is actually a clone of the CASIO fx10
calculator, CASIO's very first handheld scientific calculator, with 10
functions, hence the name fx10.
It is a calculator with some very peculiar features:
 It has a lowercase zero, making results with zero's in them very
difficult to read but really cool looking.
 When an error occurs, the display is filled with 8 lowercase
zeroes.
 The natural logarithmic functions has its accompanying exponent, the 10log does not.
 The "="key can be used to repeat the last calculation.
 There is a 'a^{n}'key to calculate powers. It only accepts single digit
exponents and displays its result immediately after pressing a number key.
 The calculator has no issues with roots and logharithms of negative
numbers, it completely
ignores the minus.
 The calculator has an 8digit accuracy. The scientific functions however
display their results with 6digit accuracy.
 Even though there is a 'π'key, the trigonometric functions always calculate
in degrees.
 The largest number this scientific calculator can display is "99999999".
 When performing a calculation, the display shows that the calculator is really
busy calculating, showing all sorts of intermediate results. This together with
the lowercase zero makes this calculator look really technical and nerdy.
 A nice detail, all four batteries are facing the same way.
