This small Bluetooth module is very effective. I bought it to listen to music and radio on my mobile when I travel by bike or when I workout. The helmet is very nice and the multiple rubber feet allow good adaptation to any shape ear. However, the pairing information between devices without display, as SBH20 and eg a Telme2 or Nolan TRX Bluetooth HD Wireless Home HD is a bit complicated. The pairing information between these devices is difficult to read.