ProPlus vs. ProPlus 2 -- differences?

Could someone please list the differences between the proplus and proplus 2?

Aside from the logging/download functions, I can't ID any substantive changes.

Thanks, in advance, for your assistance.

Tom H

* LED warning light
* Safety Stop Prompt
Turn-Around Pressure Alarm
* Control over data presented on dive mode display (current depth, pressure and Dive Time Remaining are constant - a button push allows you to add Max Depth and Elapsed Dive Time or Time of Day and Temperature or Current PO2)
* Larger display digits
* Water and manual activation
* Alarm Acknowledgement
* Battery Hot Swap
* Depth dependent ascent rate
* Simulator
* Tissue Loading Bar Graph Alarm