[. . . ] Plantronics guarantees the satisfactory condition of the equipment with regard to manufacturing and material defects for 2 years from the date of purchase. [. . . ] A Attach the ear cushion to the receiver ensuring that the two notches on the ear cushion align with the boom. B Insert the ball joint of the headband into the socket on the back of the receiver. D Place the headband over the top of your head with the ear cushion resting comfortably on your ear. The headset can be worn with the receiver on either ear ­ simply position the receiver on the appropriate ear and rotate the boom into a suitable position. F The clothing clip helps to keep the headset free from the weight of the headset cable. G Attach the pivot ball ring onto the receiver ensuring that the mounting socket for the earloop is parallel with and touching the boom. H Depending on which ear the headset is to be worn, insert the earloop point into the mounting socket of the pivot ball ring from either the left or right hand side. Then position the headset as shown and gently press the receiver against your ear. [. . . ] The In Use Indicator is designed to work exclusively with the CA40 DECT Adapter. [. . . ]