This is a truly fun piece of gear that's capable of doing things almost impossible to duplicate with any other electronic instrument. The range of sounds and effects are almost endless! Here's what the company's website has to say about it:

The Theremini is a reimagination of one of the oldest electronic musical instruments, and Bob Moog’s first love – the Theremin. Its design fuses the experience of playing an instrument you don’t actually touch, with a powerful sound engine derived from Moog’s award winning synthesizer, Animoog. The Theremini guarantees immediate success to anyone at any skill level or physical ability, while also providing new ways to experiment with music, education, and gestural control. 

Assistive pitch correction allows each player to adjust the instrument's level of playing difficulty. When activated the Theremini will play every note in a selected scale perfectly, making it impossible to play a wrong note. As the assistive pitch correction is decreased, more expressive control of pitch and vibrato becomes possible. When deactivated, the Theremini will perform as a traditional Theremin and there is absolutely no pitch correction. 

A built-in tuner supplies real-time visual feedback of each note as it is played, as well as its proximity to perfection. This is useful for correcting a user's playing position, and for educating younger players about pitch and scales.

The Presets section of the Theremini allows you to select from 32 wave or wavetable-based presets, store a selected scale, set and recall a specified playing range, and specify settings for the included stereo delay and more.

Recessed in the top of the Theremini is a compact speaker perfect for private rehearsal and quick setup anywhere. Silent rehearsal is also possible via the front panel headphone jack. Simply plug in ear-buds or headphones and the built-in speaker becomes silent.

For live performance and gestural control, the rear panel of the Theremini features stereo line level audio outputs, a Pitch CV output with selectable range, and a mini USB jack for MIDI connectivity to the free Theremini Mac / Windows software editor and Theremini iPad editor.

Feature list:
• Pitch correction w/ selectable scales and root note
• Built in tuner allows you to learn pitch and scales
• 32 Wavetable based presets
• Built in speaker
• Headphone output
• Two 1/4" audio outputs
• Single Pitch CV output w/ selectable range
• User selectable scale and root note (stored per preset)
• User selectable range: highest note and lowest note (stored per preset)
• Adjustable Stereo Ping-Pong Delay
• Removable pitch antenna - built in storage compartment on bottom-side

Comes with 2 mic stand adapters as well as a desk top mic stand (shown).