The True Talker is a grunt tube made of tough durable rubber with four bands located next to the mouth piece.
Each band producesses a diffrent sound from a fawn bleat to an old buck grunt , all you do is press your finger on each band and blow lightly in to the tube.
The first band is for a fawn bleat , the second band is for a doe bleat or grunt , the third band is for a young buck and the forth is for an old buck.
This product is the best on the market because it's made to last and it works all though out the intire season in all kinds of weather as long as you take care of it and keep it dry.

Thanks for the info.

Tru Talker and Bow Grunter plus. As far as electronic calls I found the Cass Creek call to be fantastic! The tending grunt call works great in combination with Primo's Can. I have the remote with the moving sound and really like it, the only change I would make to it would be to add an estrous bleat instead of the lost fawn.

Haydel's DG-87 sounds just like the deer I've heard.

definately get something adjustable