Sena Bluetooth SRL2 Powerful Dual Bluetooth Chips Audio Multitasking Automatic audio level adjustment Voice commands Group Intercom Technology Compatible with non-Sena Bluetooth communication systems Advanced Noise Control Sena and SHOEI developed the SRL2 Bluetooth® communication technology for the SHOEI GT-Air 2 helmet. The SRL2 has the same features as the best-selling 20S, but with a simpler 3-button interface. You can easily connect the SRL2 to your smartphone to play music, hear GPS instructions, chat on the phone, and do other things. Why the Sena SRL2? Sena is the most well-known producer of motorbike wireless communication devices in the world, and it continues to be the industry's uncontested leader. Sena, in addition to its excellent Bluetooth headsets, offers a variety of accessories to make your journey safe and free from any auditory distractions. Indeed, Sena communication technology continues to revolutionise how riders communicate and connect with each other while on the road.