Sena Spider ST1 Dual Pack Bluetooth Communication  The Sena SPider ST1 is an affordable mesh-equipped  communication system which has a glove friendly jog-dial control. The spider ST1 is Sena’s first communication system which fully operates on the new Mesh intercom platform and is CE, FCC and IC approved.  The Sena spider ST1 has an premium HD- audio set which gives impressive audio quality. The HD- speakers were designed in such a way to reduce the chance of possible irritation on the ear. The HD-speakers can be easily placed inside the helmet using the standard speaker pockets.  Because the Sena Spider ST1 has Bluetooth 5.1 itis possible to connect your smartphone with your communication system. The Spider ST1 is equipped with Sena’s Multitasking technology.By using the  mesh intercom it is possible to communicate while simultaneously controlling your smartphone functions such as music or GPS.  Lastly the Sena Spider ST1 makes use of Multi- Channel Open Mesh. With this - Sena Spider ST1 Dual Bluetooth Communication System Size