This is a great pitch shifter pedal that has 3 modes and true bypass. A great pedal. 

Here are some of the specs:

• Toms Line Mod Harmonizer Pitch Shifter Guitar Effects Pedal
  
  Pitch shifter
  
  Dry, wet and range control
  
  3 modes options: up, detune and down
  
  True bypass
  
  Smart stop bar design
  
  When stamping on the pedal during play, the central located metal stop bar prevent foot to move any buttons influencing the performance.
  
  Aluminium alloy case
  
  High quality metal components
  
  Power input: 9V
  
  by power adapter type - tip negative (-)
  
  Power consumption: less than 20mA
  
  Slip resistance bottom
  
  Compliant with RoHS regulations, FCC, CE, etc.
  
  Enviromental friendly material used, no painting
  
  Dimension: 92*38*32mm
  
  Weight: 133g
  
  Cartonbox package with magnetic closure
  
  Pedal surrounded by a foam to prevent damage in case during transportation
  
  Desiccant included to keep the pedal at a perfect storage condition before using
  
  Free 3M tape velcro one pair enclosed
  
  Operation manual