Love Chrome PG Tetsuki BK306/550 *Please check the official website for detailed specifications. I do not have expert knowledge, so my response will be limited to what I know. Purchased new about two years ago at a Tokyu Hands store. I used it occasionally and put it away in its case after use, but it became a hassle to take it out and put it away, so I stopped using it. I think I actually used it about 20 times. I used it as an out-bath treatment. Comes with a case. The brand card (square one) is missing. No smokers or pets in the household.