Basically, this would be the right headset: Midland Headset Security MA 31LK Pro But it did NOT work for me. I "rang out" the headset (measured the ohms): The signals were connected incorrectly. The speaker on the thin plug, the microphone on the thick plug = wrong. I received a refund from Digitec without any problems. I then soldered something together myself using a different pair of stereo headphones (speakers only). It is therefore not clear whether the next headset you buy will work correctly (was it a series error by the headset manufacturer or was it a single copy that was wrong!!!!?????) Try it out immediately after purchase and if it doesn't work, measure the thick plug ohmically. It must have between 25....35 ohms between the front and the next part of the plug! Kbt

Ja, 4x AA

Was delivered to me as shown with all accessories

Only one unit as it is a high quality product.

hey hey i bought it and have already used it a few times on motorbike tours. mounting it in the helmet is no problem and the things stay in place. the communication is clear and distinct, even at 80km/h in closed helmets. where you want to mount the talk button, you have to test yourself. i have everything in and on my jacket, so i'm not connected to the motorbike. i can't say how far they reach, because so far we've mostly had visual contact. occasionally we've also had babyphones on the devices, change the channel and it was quiet ;) compared to helmet systems, the whole thing can also be used as a normal outdoor device. a clear advantage for me.

Has been adjusted in the meantime, 16 channels. :-)