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_27653752_1 (resolution VARCHAR, pixels_per_degree__ppd_ VARCHAR)

### Question ###
What's the resolution of the model with a PPD of 69?

### Accurate SQL ###

SELECT resolution FROM table_27653752_1 WHERE pixels_per_degree__ppd_ = 69