It is remarkable how devices that were updated recently (2022) no longer have a traditional FM-radio, due to the troublesome supply of electronic chips and components.
The reason behind that decision is that it is better to have a proper functioning intercom without FM-radio than no intercom at all, so the least essential element is cut.
This obviously doesn’t mean you have to go through life in silence now: there’s still the option to listen to music through your smartphone or external MP3-player or even to an online FM-station with weblink. It even sounds better, without static. The only disadvantage is that the data usage of your smartphone gets a little boost on the way.
The SF2 is a continuation of the SF1. Where the latter is limited to all functions such as music, GPS, telephone and intercom function between rider and passenger, the SF2 is a step in the direction of a real intercom.
In the direction of is even a bit dishonoring, because the SF2 is just a handy and well-functioning intercom. In addition to all the functions of the SF1, you can make bike to bike calls with it. So why does it seem - also when it comes to price - that the SF2 is just a baby brother? Because the manufacturers are pulling out all the stops today and want to make group conversations possible over many kilometers and with many bikers.
So the SF2 actually goes back to the essence, but does so on a contemporary and high level. Both the Bluetooth functions and a conversation, everything is on point. For a distance of up to 800 meters*, two people can talk without any problems. More than enough, because if your co-pilot is at 800 meters distance, there is usually something wrong.
*in open terrain
The SF2 is operated by voice and with Bluetooth V4.1, stereo sound, electronic wind noise reduction, quick charge system (1.5 hours), about 13 hours of talk time and a standby period of seven days the SF2 delivers a lot for relatively little money.
The HD version comes with the (smaller) standard speakers (35 mm diameter and 8 mm thick) as well as larger HD (High Definition) speakers (45 mm diameter and 12 mm thick). The HD speakers give an even better, clearer and louder sound than the standard speakers. When you have limited space in your helmet, you can use the standard speakers.
If SF1 or SF2 do not suffice, then the SF4 can be a solution. In all three cases, this is a sleek, slim and handy device, which should fit in just about any helmet.
General remark: The world of electronics (which also includes intercoms, smartphones, GPS's, etc.) is changing so fast, that it is possible that some (outdated) devices are not compatible with each other in certain areas. Unfortunately, the manufacturer can't provide us with data that shows which combinations between intercoms/GPS's and/or smartphones cause problems. A regular update of all electronic devices is therefore desirable to avoid problems as much as possible.
