This product comes with a warranty from the official Japanese importer. The instruction manual is in English. Due to space constraints, the item is being stored in a rental warehouse. Shipping preparation takes 3-5 business days (excluding weekends and holidays). 1 pair (1 each for left and right) Main specifications of this product: ・10 x 16cm 4 x 6 inch coaxial 2-way speakers ・Power handling: Rated 75W ・Sensitivity: 88dB 1W/1m ・Frequency response: 50Hz ～ 20KHz ・Woofer mounting diameter: 101 x 151mm ・Woofer mounting depth: 44mm ※Grilles are not included. If there are any problems, the manufacturer will not handle them directly, so please contact us. We will act as the point of contact and handle the issue with the manufacturer. Damage to the speakers due to improper installation or distorted signals even within the rated input is not covered by the warranty. As this is an industrial product, defects may occur. In such cases, we kindly ask for your cooperation in troubleshooting (e.g., swapping the left and right units). Under no circumstances will we be held responsible for any damages arising from the use or inability to use the product (personal injury, accidents, social damages (money, time), etc.). ※Labor costs and work fees associated with installation and removal are not covered by the warranty. In the case of initial defects, a replacement will be shipped after the manufacturer confirms the symptoms. We cannot provide advance replacements, even for professionals with urgent deadlines. We cannot provide advance delivery under any circumstances, even if you are in a hurry. Please confirm and understand the above contents before purchasing. To put it simply: We are not a shop, so we cannot provide installation support, but we will provide full support if there are any product defects, such as no sound. We want to support those who enjoy DIY car audio. If you have any questions or consultations, we will answer them to the best of our ability. When there is no suitable-sized cardboard box for packaging, we may wrap the product's outer box with bubble wrap for shipping.