【Brand New, Unopened】 I purchased this from Yamada Denki about six months ago, but it has been kept unopened since then. Since it is unopened, I have not checked the operation. If there are any defects, please handle them yourself. There are no noticeable scratches or dents on the outer box. The round seal is also intact, so I believe it is definitely unopened. I will ship it via Yu-Packet Plus. I have set the shipping time to 4-7 days because I travel frequently, but if I'm not traveling, I will ship it immediately. 【Quoted from Kojima Net】 Yamaha YAMAHA Full Wireless Earphones Black Remote Control/Microphone Compatible Bluetooth TW-E3BB ● Yamaha's unique "sound and music reality expression" - Yamaha's unique "Listening Care" technology that optimizes the balance of sound according to the volume and reduces the burden on the ears. ● An emotional music experience - Comfortable fit for enjoying music, and a wide variety of 6 colors - Experience the dynamism of sound and music as it is, and the immersive feeling unique to a musical instrument manufacturer. ● Convenient features that support "sound and music reality expression" and "emotional music experience" - Compatible with Qualcomm TrueWireless Stereo Plus for excellent connection stability - Dedicated app "Headphones Controller", voice assistant (SiriR/Google Assistant) compatible - Up to 24 hours of playback & charging case with 4-LED battery level indicator, waterproof (IPX5 equivalent) specification