Product Description:100% brand new and high qualityBy using this product， you can disguise yourself when you using stationary phones， cellular phones， speakerphone， pagers， car phones， door phones， etcAllows you change your voice from male to female or female to male， you could also try something new， hear yourself talking in the voice of robot with just turning the volume wheelPocket sized for portability telephone voice changerLED Indicator: Power indicator (faded red means low batter; no light means no battery)Pitch Adjuster: (8 selections: 3 high， 3 low， one normal， 1ET)Sound Insulator: Used to block out noise interferenceSpeaker: Voice output piece (fits over phone mouth piece)Power: 9-volt battery powered( not included)Dimension: 9cm(L)*6cm(W)*2cm(H)( approx)Color: bluePackage include:Telephone voice changer disguiser *1(battery not included)User Manual *1