I only use it for listening to music while I'm riding. At first the music sounded terrible and I was going to return it. Then I found if i go into my equalizer on my phone and set the bass to max and the treble to min it sounds pretty good. The one hand controls are great and would buy another one.Haven’t gotten them setup properly or maybe they don’t do what I expected.Only thing I dislike it the shorter than I like battery life. Other than that love it!Just installed these and used them on a long ride and they work great! Definitely not Bose quality music but wouldn’t expect that. Wife and I can talk easily and listen to the same music. Controls to switch between music and intercom and change music works well and is easy to use with gloves. Would definitely purchase again.Older but still dependable Sena helmet sound.It was a good purchase, good sound quality, and pretty loud at full blast. It doesn't cancel out any outside noise, but at the right volume, don't have to fight trying to hear the music.Better than my previous set up, and better than fighting to get my Bluetooth earbuds into my helmet.System was easy to integrate into my helmet and connect to Bluetooth device(s). Have not attempted to make a call while riding (mostly used with Ipod for music).Like in the title, I bought my first smh10 in 2008. Never had a problem! Was thinking of going mesh but I usually ride alone or with the wife so this would be fine. Does everything I need it to do! Calls, music, directions are all simple and flawless. Maybe the next time around I'll go full hog on a mesh but for not the 10 really suits my needs. Too bad Sena is discontinuing this item. But I get it...My friend and I have been looking for a decent set of comms for our biking for a while now and had tried a number of PMR radios and various VOX/PTT headsets however all had been pretty poor. We did a bit of research and decided to bite the bullet and fork out for a decent set of bluetooth intercomms. We decided on the Sena SMH10Ds as they seemed to have the best consistent reviews of all the headsets we could see the only drawback seemed to be the price, however at this stage we were just keen to get something that worked!!Anyway Just had these out for the first time and have to say I am very impressed. Using in the intercom mode sound quality is great even at 70mph+ although the wind noise does start to become a factor however if you speak loudly you can still be heard. As for range we were 500m apart at one point and out of line of sight and were still able to hear each other clearly. Using with a mobile phone sound qualty is just as good during calls and when listening to bluetooth music. The jog wheel on the side also allows quick control of volume, tracks, call answering etc.Installation of the unit is fairly easy (although think this will depend on your type of helmet) I have a Nolan N series flip front and I had to use the adhiesive pad rather than the clamp assembly to fix the unit to the side, the wires etc then fed neatly behind all my padding and I opted to use the boom mic supplied which again fits neatly behind the padding with only the last 2" of the mic exposed at the front. The earpieces take a bit of trial and error to get into the correct position which is easily done as they are velcro backed so you can remove and re attach as required, but once in place they do stay put.Overall I am glad I paid the extra for the SMH10D over cheaper units I have seen. I can highly reccommend.***UPDATE***Been using these for a couple of weeks now, still really impressed. My only negative with the units I have discovered is that when you go out of range of the other intercom and they cant reconnect within about 5 minutes it will stop auto searching and cancel the pairing with the other intercom. Not a huge problem because pairing them again is only a coule of co-ordinated button pushes between you and your riding partner once you are back in range (easy enough to do on the move too) and you are back in business.We bought a much cheaper set of headsets and had lots of issues - poor volume at speed, trouble trying to pair, low battery life.These are very different!Hold both buttons down to turn them on and then press the big button to pair - a clear voice or tone tells you it's done very quickly.Volume control excellent and the clarity is exactly how you want it to be. We can even use them with the flip front fully open at up to 30mph.I also paired mine with my phone and I can make calls while riding - one press on the button then voice dialling kicks in. People can't believe I'm riding the bike.They are expensive - our other set was around £80 - but you do get what you pay for with these things.We've had these for a while now and I thought it was worth a follow up. They are absolutely brilliant - still haven't used all of the functionality but for phone connection and talking to another rider they work brilliantly. We've lost sight of each other round curves or been left at traffic lights and there's no problem.Can't reccomend enough! I use these in my work helmets I'm a tree surgeon and I'm in trees all day and need to constantly communicate with my groundsman, I have not had 1 issue with them, the sound quality is amazing, there wired into my ear mufs what protect your ears so with the speakers inside there, so when I stream music to both devices the quality is on par with my bose qc35, now if they was in a moto bike helmet I think there would be a lot of road noise inside, that's why there's mixed reviews, we work within 100m at all times so not sure of the true range, batery lasts all day, make answer calls with 1 button, absolutely worth the money for my job,I bought this after some friends and I had tried the Interphone. We found this over complicated to operate and flakey at best when trying to connect 4 or more riders.One of my friends just decided to purchase the Sena and I followed suit expecting the same problems to occur with any Bluetooth intercom. Not so......... I won't go into detail because you can find numerous reviews on the Web. We've yet to try and connect more than 2 riders so I can't comment on this feature yet. There is a little bit of wind noise created by the unit fixed to the lid. The speakers don't have a great deal of Bass but can exceed safe volume levels. My buddy uses other more expensive speakers with good mid range and Bass. Crystal clear voice / noise cancelling.This Sena gets my 5 STARS It's worth every penny. Easy to use and adds to enjoyment of riding bike.Update: 4 Units connected and work successfully. They seek to reconnect automatically when range exceeded. I've got the speed dial programmed so if we do go out of range I can still make a quick call to my buddy using the cell phone network.One of our group has just purchased the latest Sena which claims to connect more than four riders (using the same model) although we did get his new unit paired and connected (total of 5 now) which worked some of the time. Possibly pushing the envelope of what is achievable with our existing units.These are expensive, but excellent. I've used radios with bar mounted PTT buttons before but these are far easier to use and give a much higher audio quality than any radio I've used. They come paired with each other from the factory so once fitted, all you have to do is turn them on then simply push the big dial once to connect the intercom feature and that's it; two way communication with no further button pressing involved. At higher speed of 60-70mph, the audio is still clear, though you may have to turn the volume up a bit depending on how loud your bike is and how well sealed your helmet is. Easy to fit, easy to use and an excellent buy.