[BlindMath] talking calculator

[vedika phadke]

Hello, 

Iam miss Vedika a commerce student from india. 

I need to purchase talking calculator. 

the specifications are: 

1. 12 digit machine;

2. 2 storages double memory; 

3. audio jack to connect earphone; 

4. portable batry, sufficient batry back up; 

5. functions: additions, substraction, multiplication, division, percentage, square-root, tax rate, decimal fractions, check, correct, clear, and so on. 

budget: flexible. 

Please suggest me any good model of talking calculator, calculator works with screen reader or inbuilt audio. 

I need to use the same during examinations, hence calculator on mobile phone or on laptop are not useful. 

Please reply!

Regards,

Vedika 

India