BeatLab makes it easy to practice and perfect a variety of rhythms and styles. You can simply select one of the rudiments" (basic rhythms), or use the convenient sliders and keys to program your own rhythm for practicing. BeatLab will play the tempo and will flash its two-colored LED to help you feel the beat. The red light indicates the strong beat/left hand while the green light indicates the weak beat/right hand. BeatLab is designed with an extra-loud volume so that it's easy to hear what's going on even if you're wearing headphones. BeatLab isn't just great for drummers. Any player will find it indispensable for brushing up on their performance technique. For just the right feel, try out BeatLab's Program mode. Use it to build your own simple or complex practice patterns. You can combine up to nine types of rhythm and accent at a beat or tempo that you specify. Use quarter notes, eighth notes, sixteenth notes, as well as triplets - you can even choose five to nine strikes per beat. Adjust the rhythm and accent volume using BeatLab's five sliders to create an original pattern that's just right for you. BeatLab can store twenty-four programs in internal memory. There's also a Chain mode that will memorize eight chains, each containing up to sixteen programmed patterns. You can also make the tempo speed up or slow down gradually, or switch the rhythm between eighth notes, triplets, and sixteenth notes while you practice. Tap Tempo function lets you set the tempo by tapping a button. Headphone jack and adjustable volume. Operation and settings are made easy by the basic layout of sliders and keys. Backlight display for good visibility. Battery operation (four AAA alkaline batteries) or AC adapter.