This product purchase 1 year.this perform is best. This product connect Bluetooth 4.0 and NFC. SBH- 20 give basic earphone and bad quality sound. SBH-20 3 button play pause and next.Its charging time 1 hour. It has four types of LED light green yellow blue and pink.It has not any type adopter. BT range 10 meter and space range 15 meter. it clip is very strong and not remove itself. Very important feature noise cancellation.