I think the hand held are the best. I had to splice my wires and add alligator clips to them. I went to Home Depoo and got copper pips.

Sorry this took so long

It does not matter where you put the wristbands. As long as they are not on the same arm, They will work It is very hard to explain how to program the device: I'll shall try

The on button: Red
A) Push it and hold it down until beep stops.. This will give you full control of the amount of time you zapp

B) If you take your finger off the power button before it stops beeping, you will have activated a program Dr. Clark recommends: 7 minutes of Zapping and 20 minutes rest. 7 more minutes of zapping and another 20 rest. After this, one more 7 minutes of zapping.

The device will go into pause mode until you set voltage level

Volt button: yellow
A) Push yellow button once until it beeps once: activates zapping
B) Holding it down again will give you a series of beeps: each beep gives you a higher voltage..

Be careful you don't hold it down and get more that 6 beeps. This will cause the device to start over on voltage to 9v: lowest

Good luck