This is a great classic heavy metal distortion pedal with true bypass. A great pedal. 

Here are some of the specs:

• Includes:
  - Pedal
  - Tomsline black presentation box with magnetic closure
  - Instruction manual & Tomsline Sticker
  - 3M Velcro tape cut to size for mounting to a pedal board
  
  FEATURES:
• Heavy Metal Distortion Pedal
• 2 Modes: extreme and classic
• Volume, contour, and distortion control
• True bypass
• Smart stop bar design stops you from accidentally hitting any controls when turning the pedal on/off
• Aluminium case
• High quality components
• Power input: 9v
• Power consumption: less than 20mA
• Power adapter type (not included): Centre negative
• Slip resistant bottom
• Compliant with RoHS, FCC, CE, etc
• Dimensions: 92x38x32mm
• Weight: 133g
• Package contents: Pedal, user manual, 3M hook and loop tape