try这个
<Box sx={{ width: "250px", height: "250px", "& .MuiClock-root": { transform: "scale(0.8)" } }}>
<StaticTimePicker
value={values.time}
onChange={(newValue) =>
handleChange({ target: { name: 'time', value: newValue } })
}
orientation="landscape"
defaultValue={dayjs(formattedDateTime)}
/>
</Box>