Intercom(インカム）: これがおそらく最高の機能だと思います。75MPH(約120km/h)で走行中に会話しても、問題なく聞き取れます（音量が十分あり、明瞭）。インカム設定が完了すると、後は自動的に会話ができるようになります。
電話通話：一つ気づいた点があります。走行スピードが45-50MPH(約70-80km/h)に達すると、電話相手がこちらの声を聞き取りにくくなりました（たくさんのノイズが混じる）。私の方は全く問題なく相手を聞き取ることができます。SENA技術サポートの説明によると、インカムと電話は異なるBluetoothプロファイルを使用しているため、それが原因ではないかとのことでした。
音楽： iPhoneなので自動的にHFP(電話用）とA2DP（音楽）用のプロファイルで接続します。早送り/巻き戻しはできませんが（iPhone側の仕様と思われる）、再生、一時停止は操作できます。
インカム通話もしくは電話通話が開始すると、自動的に音楽再生は一時停止、通話が終わると再び音楽が始まります。これらの会話優先度に応じて、上位の機能が自動的に割り込んでくる形となっています。iPhoneのプッシュ通知も聞こえます。
困った点があるとすれば、留守番電話（ボイスメール）が通話中に機能したときに、ボイスメールをSMH10側で切ることができませんでした(iPhoneのメニュー構造上）。自宅でテストした際には、SMH10側の操作で電話通話を終了することができたので、今度同様の状況を再現し、問題を改善できるかどうか試してみます。
Late last week (06/04/2010) we got two more units, so I'll try to update this post with more information as I get more usage.
We have paired these devices with three different phones (one phone per SENA unit). Not a single problem.
Also, the pairing of the SENAs among themselves is very easy.
Intercom: is probably the best feature. I was using the intercom at speeds of about 75MPH and it was completely understandable (loud and clear). Awesome. Once an intercom request is made, the communication is established automatically.
Phone calls: I have realized that when I get to speeds of up to 45-50 MPH, the person I'm talking on the phone has a really hard time understanding me (a lot of noise), I can hear them without a problem. I was told by SENA tech. support that the intercom and phone calls use different profiles, so this might be the problem. I'll need to get a better helmet and see if it helps the situation. You can decline or pick up the phone call. You hear an audible indication of the phone call.
Music: since I have an iPhone, the pairing is done using HFP (phone) and A2DP (music) automatically. I can not control track forward/back (apparently and iPhone issue) but I can play/pause and if I'm listening to music and a phone call is answered or an intercom connection is made, then the music will automatically stop and start after the communication is over. I which they would have an audible indication of the intercom request which, following its priority, it will simply kick in if you are not engaged on a communication with higher priority (phone call).
I can hear iPhone notifications (turn by turn directions, and I believe also the indication of a new email and text message !!!!
). I still need to find the right GPS turn-by turn application (Google???????)
I did have one problem as I was on a phone call and the voicemail pick up. I was not able to end the voicemail call and pick up the incoming call (apparently this is because of the iPhone menu!!!!!). So, I had to wait until the voicemail decided to finish the communication
I did a test at home where I was able to end a phone call from the SENA device. I'll have to replicate the previous situation and see what I can do.
iPhone Voice commands: I have been able to make a couple of phone calls with voice command. It is a little tricky, probably because I'm not too familiar with its use
Waiting for a new adapter: Tech support told me that they're working on a 2-way radio adapter for the SENA. It is suppose to be ready in 2-3 months
Overall, I'm very happy with this device.
As I use it more and I find more useful information, I'll keep on updating this post.
On the meantime, I hope this is helpful.
