[3.7 VDC] I use this kit primarily for educational videos where one or two people are talking in a controlled environment. I find it very intuitive to use, and have yet to have any signal issues. The encrypted digital signal prevents cross-talk like you might get with the G3. This particular kit does not come with backup batteries, although the case does come with slots for 2 receiver backup batteries, and slots for 2 transmitter backup batteries. There is no extra slot for the stick microphone backup battery, but it can fit diagonally in the square compartment. I highly recommend getting backup batteries if you plan to shoot two people for over 3 hours since the small receiver batteries only last about 4 hours, although if you have a digital recorder with phantom power on the XLR input where the receiver is plugged in, the receiver will automatically turn off if you turn off the recorder. This helps conserve battery. The transmitter packs are small relative to the Rode system which is partly what sold me on this system, and this kit option was hard to beat.

[0.09 lb] This product is easy to use and produces crisp sound. Love it!

[430 mAh] Works every time. Battery last and you don't have to mess around with frequencies. Oh and it sounds great.

[4 x 3.6 x 1.2"] You can trick the eyes but you can't trick the ears.....ALWAYS remember that Weddings. I could write a book about all the things that can go wrong at weddings for a videographer and poor audio is on top of the list. With weddings, you get one chance and one opportunity, in most cases, so I am most impressed with the simplicity of setting up the AVX, as well as the crisp and clear sound quality it produces. Pairing is as easy as pushing a button. There is no second guessing about signal strength or fine tuning, as it does it all for you, and it sounds great. (Quick story)....Groom comes out, bride comes down isle, preacher gets ready to talk and turns on his microphone. Yes, you guessed it. Mr groom is linked to the preachers microphone and is back-feeding to the amplified sound system. I then became part of the ceremony when I had go to the groom to correct this. GEEEZ! This will not happen with the AVX system as it uses a different frequency range not common to other wireless systems. However, if there is one, it will change automatically to an available frequency for you and continue to do so. Very impressive indeed. Don't think for a minute that simplicity doesn't have its price, it does, but the AVX is well worth every penny and here is why. There's no white noise jumps, crackles, or audio level changes. This can take hours to correct in post production, and even then only making it sound a little better. You seasoned videographers know exactly what I'm talking about. I feel better turning over a final product to my customers knowing the audio will definitely not be an issue what so ever.

[3.7 VDC] This was so easy to use. No configuring, just power it on and use it. Long battery life too.

[4 x 3.6 x 1.2"] excellent product
batteries great

i used shure and others but this is the best..

[430 mAh] Good Mic.

[0.09 lb] I have used this system for a few months now and it has held up very well. Like others I have switched from a G3 system to this because of some interference issues but I have had no real interference issues with this system yet. HOWEVER, I have had some odd noise/interference when I have had my Tram TR50 mic near the transmitter (within a foot or so) I thought that this was outside interference at first but it is the microphone itself picking up some transmission noise (happens only with my Trams so I'm assuming that the shielding is not as good?). This may explain the two poor reviews describing interference that was constant? This has happened to me when I have the transmitter placed in the jacket pocket of the person being interviewed. Put the transmitter on a belt and it goes away. Build quality is better than G3 and I like the new batteries. I have used these on interviews now in downtown New York City, DC, St. Louis in places where I would get intermittent hits in the past but these have performed well. Small latency in the audio, but this is not noticeable in reality

[0.09 lb] I use this Lav set for interviews and weddings. Prior to this I used other Sennheiser sets. I loved the build quality of them but having to scan for open frequencies and sync the transmitter and receiver added an extra step and time which are both at a premium during a wedding especially. What I like about this set is the ease of use that it automatically scans and uses open frequencies on the fly. Several times with my old set I would be near the water recording. A boat would go by and cause interference and drop off. This set will seamlessly find a new frequency without losing audio. I use for wireless handheld mic for run and gun interviews. It works great but it seems to me the user has to hold it very close to his mouth to get the correct audio level. That means the mic is next to their mouth in all the shots. Maybe I am missing something but I don't see where that is adjustable unless I raise the audio record levels on my camera which is a pain because I will forget to set it back.

[3.7 VDC] this set looks and performs great; we love using it. is worth every penny