Same-day shipping New, unused, unopened ● Manufacturer: Audio-Technica Audio Technica ● Model Number: ATH-CKS550XBT-BL ● Color: Blue ● Shipping: Same-day shipping Rakuraku Mercari Delivery ● Condition: New, unused, unopened ● Manufacturer Product Details Page: https://www.audio-technica.co.jp/product/ATH-CKS550XBT ● Product Overview: ・φ9.8mm SOLID BASS HD driver with excellent transient characteristics that reproduces sharp, deep bass. The high-precision magnetic circuit that enhances the magnetic force increases the driving force and braking force of the driver, realizing deep bass reproduction. ・Large-diameter sound guide tube improves sound transmission efficiency and reproduces a wide range from low to mid-high frequencies. By adjusting the inner diameter of the main body conduit and the height of the ear tips, more high-frequency components can be transmitted. ・Wireless cable style that is easy to handle in front of the body or behind the neck. ・Combines high sealing and wearing comfort in a compact body. ・7 hours of continuous playback (charging time: about 3 hours). ・Bluetooth HFP/HSP compatible devices enable hands-free calls. You can make and end calls, and answer calls on your smartphone hands-free. ・Multi-pairing support allows registration of up to 8 devices. Convenient multi-pairing support for users who own multiple Bluetooth-equipped devices.