I have it for 3 years, I have changed 2 helmets and I use it almost every day. It works perfectly and I charge it every 15 days approximately. It has a great range, so much so that if I forget to close it and I am 50 meters away, it rings and not my phone. Reliable, easy to use, ergonomic. I would like it to have a higher volume because there is difficulty in hearing in traffic. In quiet streets, I lower the volume. I will buy it again, I highly recommend it.