Here are the details on the Hydrowave Mini that I have so far...
2 Sounds pre-programmed which are Passive Shad and Shad Frenzy (the two most popular ones)
There will be an 8' cable from the control head to the speaker. There will be a volume up/down and pause and play buttons on the control head.
The Mini will be powered by a 9 volt battery and should last about 6-8 hours.
This sounds perfect for ice fishing as well!
-Lawren