Sorry for the inconvenience. We will definitely help you about this. When you say it is defective, could you be specific on the problem you encountered by answering few quick questions? This information will help us to better assist you.
- Is the battery charged? Putting the battery in the charger should show you the battery status.
- The package comes with two batteries. Does changing to another battery make it work?
- Is the main power button on the bottom pressed down?
- Is the laser working?
- Is the light working?
Also few general troubleshooting steps for this product:
1) The
button on the bottom. Press down to activate the battery source. Press
again to deactivate the battery source. (The button is very small and
could be hard to press sometime. Instead of using fingertip or nails,
try put your thumb or index finger on the button and firmly press the
whole surface down until you hear a light click.)
2) The battery
installation. The battery is protected by a blue plastic wrapper.
Sometimes during charging, the wrapper will shift towards the back so
that the edge of the wrapper becomes a bit protruded out of the battery.
This will prevent the negative end of the battery from making contact
with the unit once it is in the chamber. If you can take a look and push
it back, usually it can solve the contact problem. Make sure the
battery cap is fully tightened.