This controller is meant to work with electro-stim toys from both the ePlay and Tingle lines. It features two ports at the top so you can control more than one attachment at once, although you can't change the settings between them; so both attachments will have the same patterns of stimulation at the same time. It's easy to use and has enough options that most users will be happy with it.

The box is made of various textures of plastic. It's hard and smooth to the touch, and has no real scent.

The box measures about 2 1/4" x 3 3/4", which lets it fit nicely in most hands. My hands are pretty small and I have no problem controlling everything one handed, and my husband's larger hands also hold it nicely. It will travel easily, and while it's not immediately obvious what the box is, but if you leave any of the attachments plugged in anybody who sees it will likely be able to figure out what it's for.

This box has a total of 6 buttons and a spin wheel to control the strength. The red power button feels a little finicky at times but works reliably. Press it for a second to turn the toy on; once the red light comes on you're good to pick your setting. You can choose from a tap - a consistent tapping sensation, vibrating - an almost escalating pattern that varies in intensities, massage - a seemingly random pattern of the same strength, and auto - which should be a mix of the previous patterns but doesn't feel like it does anything consistent. The speed button at the bottom is supposed to control the speed of the patterns when pressed and held. The dial at the top right corner controls the intensity of the shocks you'll receive.

If you get anything on the box, just wipe it down with a damp cloth, taking care not to get any moisture in the battery compartment. You will also need 2 AAA batteries that aren't included.

The box came in what looked like a foil lined ziploc bag. It's resealable so you can store the box in it if you like, or just recycle it.

My husband and I found this box easy to use overall. I liked that it fit easily into both of our hands and the dial moves smoothly and easily. We found that the patterns were definitely different from each other, but difficult to distinguish a specific pattern on each setting. We also couldn't tell much of a difference when we played with the speed setting, but overall we're both happy with the controller.