Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_22 (band INTEGER, system VARCHAR)
### Question:
What band is the highest and has a System of gsm-450?
### Answer:
SELECT MAX(band) FROM table_name_22 WHERE system = "gsm-450"