Stylophone Gen X-1Key Features: PLAYABILITY: Two ways to make sounds with the stylus. The keyboard to make distinct notes and the sound strip to slide between notes. PORTABILITY: Battery operated with built in speaker. Audio line out for headphones and or external speaker. Audio in to use as an effects unit. ENRICH THAT SOUND: LFO (with square and triangle waves), Low pass filter (cutoff resonance), Envelope (attack decay). ANALOG DELAY FEATURE: Add space to your sound