This is a SONY WF-1000XM4! This listing is for the left earbud only. Due to battery degradation, the battery dies within a few minutes. This is being sold as junk. Please consider purchasing for parts or repair. The ear tips can be used as they are, but please replace them if you are concerned. Please check the images for the external condition. Please consider this purchase with the understanding that it is a junk item. If you are looking for a condition similar to new, please refrain from purchasing. --Regarding Pairing-- How to Initialize With the headset in the charging case and the lid open, touch and hold both the L and R touch sensors for about 10 seconds. Release your fingers when the headset's light (red) starts flashing. The light (green) will flash 4 times, and the headset will be initialized and reset to factory settings, deleting all device registration (pairing) information. After that, you can pair and use it. YY2948