David Clark Genuine H10-13.4 Headset This headset was used for my training. Although it is a used item, it is well-made and can still be used. The microphone sponge has been removed for hygiene reasons, so please purchase one separately. While there is some evidence of use, I will include the original storage bag. FAA Approved C-57b C-58a • RTCA/DO-214 Compliant • Weight: Approximately 460g Thank you!