The germbird btcc 002 bluetooth hands free kit combines high quality sound and ease of use in an elegant piano black design the car kit can be coupled with up to two mobile phones fully duplex speakers guarantees crystal clear sound qualityconnect two mobile phones simultaneously if you want to use two mobile phones in parallel eg your personal phone and your work phone but do not always want to connect with the new kit use the btcc 002 from gembird to connect two phones after installin