It is specially designed for J- Synchros E40BT E40 Bluetooth Headphone.Great replacement old/broken/cracked/damaged/bad Headset Earphone Earpads/Headband Cover.The soft and elastic ear pads fit the ears of everyone and effectively isolate the noise from the outside environment.Durable head band cover improves wearing experience while avoiding hair product dirt the headband.The earpads enhance the fidelity of your audio and provide more vibrant sounds.Specifications:Item Type: Ear PadsColour:BlackMaterial:PUPackage Contents:1 * headpad1 pair * earpadsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.