LX-B4FM Intercom

So far I've been really impressed with the quailty of the intercom and I'm happy to recommended to others. I love that it can connect up to more than one rider which makes group rides much more fun. And for half the price of a cardo intercom you won't be disappointed. Installing was easy, just followed along a youtube vid and broke down each step perfectly. Honestly wish I got the duo pack so I could have another on my spare helmet.

Audio Quality:
Being an audiophile myself I like good sound. But having something this small at this price point, I can't complain. Yes, the sound is a little thin and high on mids the treble, it could use a little more bass to beef up the tone (bigger speakers) but you can always adjust your cell phone EQ's audio to help out. I did and went with 2 custom settings and it was a good improvement. I also tried it out with different types of music and artists (Al Green, ZZ Top, Monster Truck, Black Label Society, CCR, Slayer, Sade and a few others) and adjusted the EQ and rolling up the bass helps. See pics that worked well for me in my setup.

Intercom:
I was really, really impressed. Cruising at lower speeds 40kmh to 60kmh audio communication was clear . Going from 65kmh to 110kmh, even with our visors open we had no issues hearing one another... unlike the other unit I mentioned. The noise cancellation system in these really seems to work well. No complaints whatsoever on this aspect. We intentionally split up to increase the distance between us to test Its reach/limit... and if I had to guess, we reach approximately a 1.2km apart (1200 meters) we still talked and understood each other fine. Pushed beyond that and we encountered static... my wife said I cut in and out at that distance. We might have been at 1.6km (1600 meters) as claimed by Lexin but I can't be sure... riding at 100kmh we gaged the distance. So IMO, that is incredible! In a normal situation, we would never be that far apart anyway... so the B4FM passed that test with flying colors!

Battery life:
Impressed to say the least. We had our units turned on for 9.5hrs straight... didn't turn them off once. I got home last night after our ride and kept playing around with the unit. Pairing up my phone, listening to music, testing out the GPS on the phone with the unit and this morning the batt level is still at 100%!!

For the price they are hard to beat. More expensive ones have better features and may be more user friendly but cost 3x as much. These work great for us out snowmobiling

If you are looking at helmet communication / Bluetooth devices, these are an excellent choice! I was leaning intially leaning towards the Cardo FreeCom 2+. But, after reading every review I could find on Lexin products, I went with it. I am VERY pleased with this purchase because it works well!
-Easy to install on my Fly Conquest helmet.
-Easy to pair! Paired to my iPhone 6s with no issues, very quickly. And, quickly and easily paired with the 2nd Lexin unit I bought (duo).
-Paired and works well with a different brand integrated Bluetooth helmet that I own.
-Volume is incredible! I have hearing loss from my job and I have NO issues with the volume output of these. In fact, I had to turn down the volume because it was way too loud at first. I typically run it at 1/2 - 3/4 volume.
-Intercom (rider to pillion) was excellent and had no issues hearing when speaking in a normal conversation tone while traveling at 65 MPH with face-shields partially open. When the face shield is closed it is crystal clear.
-Phone calls are crystal clear with little to no wind noise (used with a Fly Conquest full-faced helmet). I received a call from my wife (driving her car) and me on my bike traveling 65 mph and had no issues communicating or hearing each-other in normal voices.
-Audio quality is decent. I did not expect Bose, Klipsch, Sennheiser or Beats quality sound from this unit. However, the sound quality is not bad when fitted well in your helmet. It takes a little work for positioning the speakers to get them in the right location (directly over the ears). But, It makes a huge difference in sound quality.