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_66 (screen_pixels VARCHAR, maker VARCHAR, weight VARCHAR)

### Question ###
For Amazon.com's device with a weight of 221g (7.8oz) how many screen pixels does the device have?

### Accurate SQL ###

SELECT screen_pixels FROM table_name_66 WHERE maker = "amazon.com" AND weight = "221g (7.8oz)"