RPL Mini-Challenge: All Odd Digits?

[Joe Horn]

Here's a mini-challenge for HP 49 & HP 50 programmers.

Purpose of program: Test whether a number contains only odd digits.

Input: Any positive exact integer (that is, exact-mode integer-type objects only, no reals or negatives allowed). Invalid inputs need not be tested for.

Output: 1 (meaning "true") if the input contains only odd digits. 0 (meaning "false") if the input contains any even digits.

Examples:
1357335 --> 1 (True; all digits are odd)
1357325 --> 0 (False; there's an even digit in there)
1234567 --> 0 (False; not all digits are odd)
0 --> 0 (False; 0 is even)

The winner is determined by speed * bytes (execution in seconds, times size of program without name) on 1000-digit inputs. My current best score is roughly 4.8.