This is a very distinctive looking toy that has multiple uses. One end is designed for shallow anal stimulation and the other has a scooped tip that is great for hitting the G-spot. It also has a small nub that bumps up against the clitoris when it is being thrusted into you.

The Fusion Duality is made of a very smooth, velvety plastic, it feels extremely high-quality. I did not notice any odor or taste.

The Fusion Duality is fairly large, about 10", but it's not so huge so as to be intimidating to beginners.

The bulged end that is designed for anal stimulation is about 4.5", but you probably wouldn't want to insert the entire bulged length because the control panel is placed 2.5" in on that side. I have not used it anally but it may be a little too small for someone who is experienced with anal play.

The opposite end, designed for G-spot stimulation, can be a little awkward to insert if you're not positioned properly (I don't find it pleasurable unless I'm lying down). The very tip (a slightly-curved, ~1.5" hook) is shaped so as to hit the G-spot, but it really depends on your individual anatomy as to how well it will work because the clitoral nub is placed about 2.5" down and makes it difficult to penetrate any further in. I found the G-spot stimulation to be great with my anatomy but I would have liked to been able to penetrate a little further. I also occasionally found myself wishing that the vibrations were stronger in the G-spot end.

The Fusion Duality is controlled by two triangular buttons on the bulged end. The top button changes the vibration speed (low/medium/high) in the upper portion (with the G-spot hook). The bottom button changes the vibrations in the lower portion (designed for the anus). The first speed from the bulged end motor is a steady pulsing of medium strength, the second is a slightly longer and stronger pulsing, and the third is an escalating vibration that starts off very weak and ends very strong and steady. There is an irritating ringing that I noticed when using the third speed, but I suppose it's possible I could have a defective model.

I occasionally hit the wrong button when trying to control it which was a little irritating, but I don't know that it was really a design flaw in this particularly toy since there obviously have to be two buttons with two motors. It would have been nice if there had been a quick off function (you have to cycle through all three settings to turn either motor off) but that would have added an additional button.

It's not too loud on the lower settings, but the higher ones are a little bit noisy, especially the highest setting on the anal end. It's not the loudest toy I've ever used, but I definitely wouldn't call it quiet, either.

The two halves separate to reveal the battery compartment, and it takes four AAA batteries. I have not found it to be particularly bad about guzzling batteries, and it has stayed strong every time I've used it.

The Fusion Duality is compatible with all types of lube. It's smooth all over and doesn't have any areas that seem to attract fluids or get "icky". It is waterproof and thus very easy to clean, soap and water work fine or it can be disinfected with alcohol.