Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What Band's Power (W) is 400 or less?

### Inputs:
table_name: table, columns: ['Band', 'Frequency (MHz)', 'Wavelength', 'Type', 'Power (W)']

### Response:
SELECT MAX Band FROM table WHERE Power (W) > 400