Brand: Naphon
I don't have direct knowledge, but based on my research, the naphon hi-1400 belongs to a series of desktop calculation machines manufactured by naphon, a thai company. It is an upgrade from the earlier model naphon hi-1200, and its main features include arithmetic functions such as addition, subtraction, multiplication, and division. It can also perform calculations with decimals and handle up to 10-digit numbers. The hi-1400 has a compact design and operates using batteries, making it portable for work use. It is suitable for small to medium-sized businesses or individuals who need to perform simple mathematical calculations efficiently and accurately.