Product was used and it didn't work when I tried to program it..oh and it doesn't come with DIY instructions.i felt like an idiot cranking my car up thirty times to try to program it..

This product came exactly as described with all of the included parts. My husband was immediately addicted to playing it.

I was in China with a MONSTER of an ear infection, I had gone deaf due to inner and outer ear infection. My doctor gave me this to relieve the liquid in my ears and sinus pressure. It is made in Germany and they know what they are doing!! This is awesome stuff! It makes your mouth taste a bit like pine needles but it works and it also is NATURAL, not paint thinner like other American over the counter sinus medication. No harsh decongestants or antihistamines. Wonderful, highly recommend regardless that it is pricey! It is worth every penny!!

For me...It seems to lower my heart rate allowing me to push hard before I get into my usual HR zone. Because of this I did sweat more than usual, which made me nauseous do too dehydration. I've been using this for almost a month, and I noticed these changes when I went to the gym without it. I'd recommend this product if you need a boost to go harder.