Woo hoo!!

I ordered an Angel Sounds doppler Friday and got confirmations today that it has been shipped out. They said it would be here in 7-12 days! So that will put me 10-11 weeks when it gets here. Can anyone give me any hints or tips? Do you have to use gel? I haven't got any I'll have to go find some. It doesn't have a speaker does it? You can only here it through the headphones?