Up to 25' per minute!!!  2",3" or 4" depths.  Holds the spool of wire on the installer. Digs the trench, lays the wire and covers the trench back up! Not advisable to use in wet soil conditions, will not work properly.  Caution!  This unit is not designed to go across gravel driveways or parking areas, the end result will be the customer replacing the digging rotor. Because of the size of the unit, it is not designed to go through areas with tree roots.  When using in areas with roots or gravel, tilt unit up so not digging, but you can lay the wire and then go through with a shovel or pick axe to bury afterwards.  This way you reduce opening the jacketing of the wire.