BlueAnt S4 - Manual (Page 34)

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To reset the S4:
1. Delete any existing pairing information from your phone and turn it off and back on again to refresh the phone
memory.
2. Make sure the S4 is switched on but not connected to any phones.
3. Press and hold the + and - symbols for about 6 seconds, until the S4 announces that it has been reset.
4. Now turn the S4 off and back on again.
You will now need to pair your phone with the S4 again.
Specifi cations
> Bluetooth version 2.1 + EDR
> Supported Profi les: HFP 1.5, A2DP 1.2
> Operating Range: Up to 10 meters
> Frequency: 2.4 GHz