What's the difference between Polaroid 545i and 545 pro holder?

[bmgmusic]

At BH website I noticed other than 545i there is a 545 pro holder which costs $5 0 more. Is it a better design or the older version? The polaroid website only ha s info for 545i.

[J.T.]

The Pro holder has a built in timer and thermometer. You put in a code number for the film being used, then it adjusts the timer for the temp. We just got some in and they seem to work well. Jeff.

[Bill Rennaker]

The difference between the two is simple strokery, designed to separate you and your money.