The Lelo Siri vibrator is meant to be used for clitoral stimulation, or for other external use. Because of its small and stout shape, it is not ideal for internal use, though it could be used on the labia or a bit into the opening of the vagina. This toy is very beginner-friendly, while catering towards more advanced users with its power and quality.

The top colored half of this vibrator is pure silicone, which is a 10 on the material safety scale. It has no texture to it and just a bit of a tacky feel when it is dry (though water-based lube makes it slick). The white bottom half is smooth plastic, which is an 8 on the material safety scale. This makes for a very body-safe toy that is good for beginners and advanced users alike.

The design and shape of the Siri vibrator is very ideal for anyone, whether they are a beginner or an old veteran of clitoral vibes. The end comes to a rounded tip for pinpoint stimulation, while the flatter underside can be used for a more broad stimulation area. As someone who prefers a wide area for vibrations, this worked perfectly for me. Its small size also makes it fantastically easy to hide, and ideal to travel with. Not only does the provided black satin pouch provide a discreet hiding place, but the vibrator can also be locked by pressing the - and + buttons together for a few seconds.

The vibrations for this toy can be controlled in two different ways: through different vibration patterns, and through different intensities. When the vibrator is turned on by holding down the + button for a few seconds, it starts with the standard constant vibration at a low-medium intensity. From there, pressing the up or down button will change it to one of six vibration patterns, which are in the following order:

1. Constant (starting point)
2. Long pulses
3. Short pulses
4. Quick roller coaster
5. Slow roller coaster
6. Random vibrations at random intensities

The vibration intensity for all except for the last pattern can be controlled using the - and + buttons. Even on its highest setting, though, it is surprisingly quiet. Pressing the - button down for several seconds will turn the vibrator off completely, and when it is turned back on, it will start back at the constant vibration setting.
One of the best things about the Siri, and about Lelo toys in general, is that they are rechargeable. A two or three hour charge using the provided charger will provide about four hours of power, which is much better than the life of most battery-operated vibrators.

Because of the non-porous silicone material it is made of, the Siri is easy to clean with warm water and mild soap or toy cleaner. However, it is not completely waterproof, so one must be careful when washing around the adapter outlet. The black satin bag provided is an excellent storage place for the vibrator. Only water-based lube should be used with the Siri, since silicone lube will ruin the silicone portion of this toy.