Nokia HDW-3 - Manual (Page 7)

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2. Getting started
■ Overview
The headset contains the following parts:
1 - Power key: Switches the headset on and off.
2 - Answer/end key: Answers or ends the call. This key can also be used for voice
dialling, redialling and switching an active call between the headset and the
phone.
3 - Indicator light: Displays the current status of the headset.
4 - Volume up: Increases the earphone volume during a call.