Liquid crystal display does not appear even if battery is inserted, just to be sure even after exchanging with a new battery, it was not possible to use it, but it contacted the defective product, but the contact did not come on the day and the response was very bad. I bought it because I had to hurry up, but there was only e-mail contact with correspondence after taking over the actual thing and checking it. We requested return mail correspondence including dissatisfaction with correspondence by e-mail, but only the response method also enters the correspondence method by e-mail. I wonder if such response may be a company. I think that improvement should be made.