The Tango is made out of plastic. It is a pretty safe material and best of all, means it can be used with water, oil, and silicone-based lubricants. There are two metal balls on the end where it connects to the charger. There is no smell or taste to the toy at all. To the touch, it's smooth; almost silky. The smooth texture wouldn't make it particularly interesting as an insertable toy. It's rather nice for stimulating the clitoris or nipples, or even the tip of a penis.
We-Vibe has made the Tango with a very simple design. It is cylindrical and tapers toward the tip. At the tip, there is a slightly flatter side like lipstick. This flat side is visible in the images on the site. The base is slightly flared, but not enough to make it safe as an insertable. The small, discreet shape makes it nice to travel with this toy, and it can easily be hidden. The toy, charger, and charging base can all fit inside the carry bag that comes with the vibrator.
This little toy is surprisingly strong! There are a few different vibration patterns that have different speeds and intensities. All are pretty strong. It functions with one button on the end. One click turns it on and cycles through the patterns; turning off at the end. In any pattern, holding the button down for about 2 seconds turns it off. It's a little noisy, considering it's a powerful vibrator encased in plastic. It works just fine underwater. It lasts a long time without being charged. I think it's great that it's rechargeable.
The toy can be cleaned with antibacterial soap and hot water, or alcohol. It cannot be sterilized. Storage for this vibrator is convenient. All parts fit into the storage bag. It can easily be shoved into a sock drawer. It can be used with water, silicone, and oil-based lubes.
I rather liked the packaging of this toy. It came in a neat polygon-shaped box that would be nice as a gift. I'm also really happy it comes with a travel bag. All the highest quality toys do!