This next generation version of the critically acclaimed Fret Zealot LED system for learning guitar features LEDs that are 200x brighter, a magnetic, detachable connector, dozens more light shows, an onboard piezo / MEMS microphone, gesture control, and more! The Fret Zealot system integrates seamlessly with any full size guitar (24.75" - 25.5" scale length), enhancing the overall learning experience.. The ever expanding library of 4,000+ video lessons and 250,000 song tracks give you a vast array of content options. Every piece of content is synchronized with LEDs, providing real-time finger position guidance for optimal learning.