The TT4FK is a Tiny Trainer 400 with a few important modifications. It can be used with a FingerKick, so now we have an affordable handfree transmitter! The CR2430 battery has been replaced by a rechargeable battery (the battery status is shown on the display). Additionally, the levels have been changed. Out of the nine levels, the first 8 go up smoothly (identical to the levels 1 through 8 of the PT3000). The ninth level is identical to Level 11 of the PT3000.
The patented Finger Kick is paired with your Martin System remote control and allows you to wirelessly trigger the remote’s stim button in a hands-free fashion.