The symphony interlude is a traditional vibrator by evolved novelties. This toy is fully waterproof. You can take it in the shower or the bath. It takes two double A batteries. The batteries are placed inside a removable battery cartridge. The interlude is operated by one single push button and it only has three settings. 1.Low 2.Medium 3.High. This toy is good for some beginners, and just about all that are more advanced.
Have you tried using the 1:1 ratio feature? That's really handy on the product page!
Thanks for the review
jr