The Breath Controller can be programmed to send: Aftertouch Pitch Bend Control Change System Exclusive The Breath Controller has a MIDI Echo parameter that is selectable on/off. Another unique feature of the Breath Controller is its ability to add a variable amount of curvature to the response of the applied pressure of the BC3A. This allows you to correct for a nonlinear response, or to add greater response at one end of the breath range compared to the other. The Breath Controller is programmed by sending it MIDI System Exclusive messages . Once programmed, its settings are retained even after power is removed. The Breath Controller can be reprogrammed with new settings as often as needed. The Breath Controller's factory default settings are for it to send CC #7 (volume) on MIDI channel 1, with the Echo parameter set to ON. The Breath Controller is MIDI-powered, and requires no batteries or power supply to operate with most MIDI products . A MIDI indicator LED lights up when the product is powered and flashes when MIDI data passes through it. weight: 4.1 oz. dimensions: 4-3/16" x 2-3/16" x 1-3/32"Excellent Condition.WORLDWIDE AND EXPRESS SHIPPING AVAILABLE!International Buyers: Standard shipping has NO TRACKING but a customs number. I recommend buying insurance $2. Express Shipping takes 5 days or so. It comes with a tracking number.Buyer is responsible for import taxes, customs fees, etc.