Hi @hiroyamagishi,
Thanks for your hunt. Before I can approve it though I must request that you expand a little in your own words what the product is.
It is ok to cite a part from the item’s description, but that can not be the majority as you did. Your own description has to actually explain what the item is.
As per Steemhunt’s posting guidelines (section 5):
Write a short description and hunter’s comment with your own words. Do not copy and paste from the product’s website or other sites. You can however quote some content from a site, but you must use quotation marks and cite the source properly.