Kenwood Wireless Stereo Headset Model Number: KH-CRZ20T-B (Black) Since this item is unopened, we are not responsible for initial product defects. Please understand this before purchasing. [Features] ● Comfortable Fit Open-ear design for a light fit ● Clear Sound Clear and natural sound from high-power neodymium 11mm drivers ● Long-lasting music listening Up to 7.5 hours on the earphone body + up to 14.5 hours on the charging case = up to 22 hours (※1) ※1: Varies depending on usage conditions. ● Water-resistant (※2) Can be used without worrying about rain or splashes ※2: Earphone body only. Equivalent to JIS protection class 4 (IPX4).