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Discovery 655/665: Power Saving Mode

Power saving mode temporarily disables the digital signal processing (DSP) feature of the Discovery headsets to provide a longer talk time.  To enable power saving mode, press both the volume up and down keys at the same time before you make a call.  To re-enable DSP, press both the volume up and down keys at the same time.  Power saving mode cannot be turned on while engaged in a call.
Note: After you turn off the headset, DSP will be re-enabled the next time you turn it on.

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