Since the transmitter is model 841, it can still be used even after the radio law revision, which was said to make it unusable, is actually enforced. (840 will become unusable.) This is a set of receiver 1 and transmitter 2. About 4-5 years ago, it was overhauled? It was sent for maintenance, inspection, and replacement. At that time, the two heavily deteriorated leather cases were replaced with new ones. Furthermore, I will give you one new leather case as a bonus. * As shown in image 7, the buckle on the back side is working normally, so it was transplanted to the new case as is, so there is a feeling of use. Locks etc. are normal. The leather case on the receiver side only has clouding in the window, and there are no tears or stickiness, so it has not been replaced. Everything shown in the images is included. All three lavalier microphones are working properly and in good condition. There are no symptoms such as the common "bee" noise that occurs when you touch the microphone tip. The battery cases are not cracked or chipped. There is no stickiness or deterioration of the waterproof rubber. On the receiver side, there is an occasional phenomenon where you have to push the battery pack up slightly when it doesn't turn on, but the manufacturer's maintenance said that it can't be helped, and it remains as is. Once it turns on, the power will not turn off automatically in the middle without being pressed. Since it has been stored after the maintenance return, it is in very good condition and can be used practically for a long time. I don't think you will find something in this good condition very often, so please consider it if you need it. The vertical and horizontal pins in images 12 and 13, and the metal hood are of unknown origin, so please consider them as a bonus. Due to cases where lavalier microphones were swapped out for defective ones and complaints were received about noise, we cannot offer any warranty exchanges. Thank you for your understanding.