The American Audio Flex 100 Mp3 Single Cd Mp3 Player Is Designed For The Working Dj To Provide The Features That All Dj"s Want At A Pice That Most Can Afford. This Bad Boy Features 6 Onboard Effects With Adjustable Time And Effect Ratio Parameters, An Oversized Touch Sensative Jog Wheel With Visual Marker Display Around The "Platter". Auto And Manual Bpm Counter Onboard, Tempo Lock (Also Known As Key Control) Seamless Looping And Many Other Cool Features.