Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_57 ( model_number VARCHAR, frequency VARCHAR, voltage VARCHAR )

### Question ###
Which Model number has a Frequency of 2000mhz and a Voltage of 0.75-1.2?

### Accurate SQL ###

SELECT model_number FROM table_name_57 WHERE frequency = "2000mhz" AND voltage = "0.75-1.2"