I gave this pedometer one star because it is not for anyone who wants to use it straight off of the shelf.  This pedometer can work if you do not mind working on it.  It has problems that need modification.

The top of the clip on this pedometer pushes against the body, making the vertical angle 20 degrees or more off of plumb.  That means the weighted arm inside drags on the circuit board and does not move freely.  Remove the factory clip and the tabs that hold it.  Add some adhesive Velchro to the back of the case.  Make a fabric band for your ankle.  Attach the ends to each other with Velchro.  Put a strip of Velchro on the outside of the band for attaching the pedometer to the band.  I get  accurate readings with this pedometer when it is attached to the inside of my right ankle.  I got inconsistent readings with it on my waistline.

The hair spring that returns the weighted arm to its upright position weakened considerably after about ten miles and the pedometer drastically undercounted.  I opened the pedometer and added a strut to brace the spring.  The strut is made of thin brass.  Aluminum from a soda can would work, too.  I made a "V" in one end of the strut to hold the spring.  I pushed lightly against the spring from the left side, drilled a hole in the brass, and anchored the strut to a screw on the lower left part of the circuit board.  The strut angles up just slightly from the screw that anchors it.  I now have quite a few miles on the pedometer.  (I have a theory the spring weakened because its solder joint to the circuit board may have broken slightly and allowed the spring to twist freely.)

Several times the pedometer reset itself to "0" for no apparent reason.  I know nothing pushed on the reset button.  One incident was while it was going through the scanner at airport security.  Once it reset while I was walking.  Twice it reset while I was napping on the sofa.  I am thinking a charge of static electricity overwhelmed the circuit, but I do not know.  Static electricity from too many synthetic fabrics can be a problem with more expensive pedometers, too.

This pedometer uses a counter circuit.  If someone needs an inexpensive electronic counter, connect a wire to the weighted arm and another wire to the coiled spring it contacts.  Connect a button switch to the two wires.  Freeze the weighted arm in place with hot glue.
I gave this pedometer one star because it is not for anyone who wants to use it straight off of the shelf. This pedometer can work if you do not mind working on it. It has problems that need modification. The top of the clip on this pedometer pushes against the body, making the vertical angle 20 degrees or more off of plumb. That means the weighted arm inside drags on the circuit board and does not move freely. Remove the factory clip and the tabs that hold it. Add some adhesive Velchro to the back of the case. Make a fabric band for your ankle. Attach the ends to each other with Velchro. Put a strip of Velchro on the outside of the band for attaching the pedometer to the band. I get  accurate readings with this pedometer when it is attached to the inside of my right ankle. I got inconsistent readings with it on my waistline. The hair spring that returns the weighted arm to its upright position weakened considerably after about ten miles and the pedometer drastically undercounted. I opened the pedometer and added a strut to brace the spring. The strut is made of thin brass. Aluminum from a soda can would work, too. I made a "V" in one end of the strut to hold the spring. I pushed lightly against the spring from the left side, drilled a hole in the brass, and anchored the strut to a screw on the lower left part of the circuit board. The strut angles up just slightly from the screw that anchors it. I now have quite a few miles on the pedometer. (I have a theory the spring weakened because its solder joint to the circuit board may have broken slightly and allowed the spring to twist freely. )

Several times the pedometer reset itself to "0" for no apparent reason. I know nothing pushed on the reset button. One incident was while it was going through the scanner at airport security. Once it reset while I was walking. Twice it reset while I was napping on the sofa. I am thinking a charge of static electricity overwhelmed the circuit, but I do not know. Static electricity from too many synthetic fabrics can be a problem with more expensive pedometers, too. This pedometer uses a counter circuit. If someone needs an inexpensive electronic counter, connect a wire to the weighted arm and another wire to the coiled spring it contacts. Connect a button switch to the two wires. Freeze the weighted arm in place with hot glue.