We use these for rock climbing and they are fantastic. Very easy to setup two for intercom, just read the manual first!

First complaint is that they are very directional. If the other person is too far away from your right side (seems the antennae is on the left), it starts cutting out pretty badly. I know Bluetooth can perform much better than how these are working under those conditions, I've had Bluetooth speakers that work downstairs while my phone is upstairs.

My other complaint is that although these have a USB-C port, they don't charge if you're plugging them *into* a USB-C port. The other end *must* be USB-A port. C'mon! It's 2023!

Update: We have used these for several weeks now. As far as usage time between charges, I consistently experience the following:

We ride for ~1 hr per night. Each time on my 4th ride somewhere around halfway I get a "˜battery low' announcement. I don't receive another alert for the remainder of the ride, and only once have I experience a temporary drop of signal with static and her voice cutting in and out (distance of 50' or less). It should be noted that she's never received the warning. I haven't run this to a dead battery and we charge both devices when I get the alert. Still, I feel confident in saying the device will last AT LEAST 4, possibly 5, hours on a full charge.

Distance: no issue with line-of-sight comms for at least a suburban block. With non-line-of-site we lost connection at about 2 houses with her up a detached-garage driveway and me around a street corner.

Overall we are VERY happy with these and regret not having them sooner. I would highly recommend to anyone except those riding for incredibly long, single day trips.

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As you likely know, don't believe the performance stats as advertised. These are no different, but depending on your individual needs, these can be more than satisfactory. I bought a set for my wife and I to use on our frequent leisure rides. We bike about 4-5 hours per week in one hour rides. We're never far apart, but without yelling it can be hard to hear through wind noise if riding single file.

There are very helpful. Loud and clear hand-free conversation. We've only been through one charge and I got a low battery warning at about 3-1/2 hours. Not great, but more than meets our needs. We did a brief distance test and lost reception at around 2 houses plus a turn around one corner, no line-of-sight. I feel with line-of-sight, the distance would easily approach at least a couple-tenths of a mile, more than many will require.

Pairing directly with each other was incredibly easy with no need for a cell connection or app required. Although, I believe the app is required for any group greater than 2.

You decide what fits your needs, but these definitely allow clear connection at sufficient volume to allow good safety warnings or general conversation with enough battery for most daily rides.

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Update - 8 months later "¦. We still use these every ride. My wife has only received her battery low message once, and while I have always received one after 3 or 4 rides, I now get them after about 1-1/2 rides. Obviously my battery has more issues than hers. That said, I will be purchasing another as, on the whole, it is a great product. I'm counting on my less-than-stellar performing is the anomaly, and hers is normal experience. Will update this again if needed. Still I would, and do, recommend this product.

These are AWESOME headsets. It's fun to be able to communicate with each other on rides. Sound is clear and it has a great range. One set had some static after a bit but contacted Sena and they were able to help me reset - no more static.

Well worth the money!

My wife and I thoroughly enjoy the pair of these we purchased. WE HAD TO BUY TWO OF THEM. The sound quality is excellent and makes it easy to have a conversation while biking single file, even on noisy gravel. We found the batteries ran our after about five hours so a full day bike trip will run the batteries out and leave you speechless. We chose not to pair these with phones, just to pair them directly with each other. You have to pair them every time you turn them on.

It works. Wireless communication is digital and noise free. The sound quality is decent given form factor. Voice starts to cut off about 40' away or so. Battery lasted at least 5 hours. Overall, I like it. The setup is a bit cumbersome and it has a learning curve to climb.
You need to install the Sena Cycling app and pair your device with your phone, first. Then, pair with with your friend's intercom. Intercom pairing should be repeated each time you turn on your device. You can do it in your app and the app remembers the last several intercoms previous paired. To start talk, you need to press and hold "-" button for 2 seconds. I didn't read the manual at first and thought it didn't work. So, read the documentation on the app. The usage instruction is not on the quick setup paper.