This is the drumpad that allows you to create and record percussion accompaniment to songs played from an iPhone, iPad, or iPod touch. Communicating by Bluetooth, a free app provides separate volume sliders for music and the drumset, allowing you to adjust the mix to the optimal levels. The app includes six music styles that adjust the sound of each drum: classic, rock, jazz, African, funky, or country. You can record a session in one style and then accompany it using another live; you can also record solo drum sessions without music. Its battery recharges using the included Mini-USB cable. Compatible with iPhone 4S/4/3GS, all iPads, and 3rd/4th generation iPod touch. 9 1/2" W x 5 1/2" D x 3/4" H. (8 oz.)