[. . . ] The headset is provided with digital signal processing (DSP) noise cancellation that helps you handle calls in noisy environments. Also, read the user guide for the device that you connect to the headset. Keep them out of the reach of small children. Note: The surface of this device does not contain nickel in the platings. The surface of this device contains stainless steel. Bluetooth wireless technology allows you to connect compatible devices without cables. [. . . ] If the headset has not been previously paired with a device, switch on the headset. The headset enters pairing mode, and the blue indicator light starts to flash quickly. If the headset has been previously paired with a device, ensure that the headset is switched off, and press and hold the power key for about 5 seconds until the blue indicator light starts to flash quickly. Within about 3 minutes, activate the Bluetooth feature on your device, and set it to search for Bluetooth devices. If necessary, enter the passcode 0000 to pair and connect the headset to your device. In some devices, you may need to make the connection separately after pairing. When the headset is connected to at least one device and is ready for use, the blue indicator light flashes slowly. To manually connect the headset to the last used device, press and hold the answer/end key for about 2 seconds (when no other device is ENGLISH connected), or make the connection in the Bluetooth menu of the device. You may be able to set your device so that the headset connects to it automatically. To activate this feature in a Nokia device, change the paired device settings in the Bluetooth menu. ENGLISH Basic use Change the earpad The headset may be provided with different sized earpads. Select the earpad that fits the best and is the most comfortable for your ear. To change the earpad, pull the current earpad from the earpiece, and push the new earpad into place. Adjust volume between the headset and the clip (11). Wear the headset Use the clip to attach the headset to your clothing (12). To use the headset for calling, gently push the earpiece into your ear. To have the earpiece within easy reach when you are not using the headset, insert the earpiece cable To adjust the volume, press the volume up or down key. The selected volume level is saved for the device that is currently connected to the headset. Calls To make a call, use your mobile device in the normal way when the headset is connected to it. To redial the number you last called (if your mobile device supports this feature with the headset), when no call is in progress, press the answer/ end key twice. To activate voice dialling (if your mobile device supports this feature with the headset), when no call is in progress, press and hold the answer/ end key for about 2 seconds. To mute the microphone during a call, slide the mute key towards the microphone. To switch a call between the headset and a compatible connected device, press and hold the answer/end key for about 2 seconds. Manage two calls Activate or deactivate vibration mobile device must support the Bluetooth Hands-Free Profile 1. 5, and call waiting must be activated in the device. Call waiting is a network service and is available when the headset is connected to only one device. To answer a waiting call and end the active call, press the answer/end key. To answer a waiting call and put the active call on hold, press and hold the answer/end key for about 2 seconds. [. . . ] Precipitation, humidity, and all types of liquids or moisture can contain minerals that will corrode electronic circuits. Its moving parts and electronic components can be damaged. · · Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the device. Paint can clog the moving parts and prevent proper operation. · Do not store the device in high or cold temperature. High temperatures can shorten the life of electronic devices, damage batteries, and warp or melt certain plastics. [. . . ]