This is a set of four items: the SHURE BLX4 JB, BLX1JB, SM31FH, and the case, as shown in the image. * Please note that the microphone sponge for the SM31FH-TQG is not included. Items are not sold separately. I have used these items a few times after purchasing them, and they are in relatively good condition. Please check the images for details. Operation has been confirmed. Shure BLX14/SM31 UHF Wireless Microphone System - Perfect for Fitness Aerobics - 14-Hour Battery Life 300 ft Range | Includes SM31FH Fitness Headset Brand: - Thank you for viewing.