These are ONKYO wireless earphones, which were made-to-order and sold between February and March 2024. I opened the package to check the operation, but I have never worn them. Please understand that they have been stored by a private individual. The following is a quote from the official sales website: ━━━━━━━━━━━━━━━━━━━━━━ This model, "CP-TWS01A," uses the latest SoC "QCC3040" from Qualcomm®. It supports not only general SBC and AAC but also the latest audio codec, Qualcomm® aptX™ Adaptive. When combined with compatible latest Android devices, it achieves higher sound quality, lower latency, and higher connection stability compared to the conventional Qualcomm® aptX™. In addition, it is equipped with the new technology "Qualcomm® TrueWireless Mirroring," which enables high-quality simultaneous left and right connections with iPhones, Android devices, and music players. This technology connects one earphone as the parent device and sends the signal from the opposite side to the other earphone (child device) while mirroring it. By constantly performing role swapping to prevent transmission loss of audio signals, it suppresses sound interruptions and noise, and also prevents uneven battery drain. It also features an ambient microphone function that captures surrounding sounds. You can use the built-in microphone to capture external sounds. Furthermore, it is equipped with a waterproof function (IPX7), so you can use it with confidence even during exercise or in sudden rain (the charging case is not waterproof). This collaboration model comes in three models: "Kazuma Kiryu," "Goro Majima," and "Ichiban Kasuga." The left and right housings are decorated with the marks that symbolize each character, and the charging case is decorated with a part of each character's tattoo. The wireless earphones themselves are designed to be like the characters, bringing the world view as close as possible to the product. ━━━━━━━━━━━━━━━━━━━━━━ Communication and shipping can be done smoothly from Monday to Friday. Thank you for your understanding. Thank you for viewing.