... MP3,MP4,CD,phone,computer good design and so on 2. Noise cancelling ,with soft silicone cap,wearing ... ,grey ,transparent grey .blue ,transparent blue and so on ,so long as your quantity are large ,we can ... replacement or damage the defective items and make the new ones . Reterun:1:Before delivery ,every one will ... ASAP.and for next order ,we will provide new ones on free as per defective ones in last order ...