The Philips shb4205bk headphones are controlled by physical buttons and have a separate power button, through which changes are made to the power and Bluetooth status on the headset, follow me here to learn more.
Turning the headset on and offThe power to the Philips shb4205bk headset is controlled by the headset's power button, which is located on the right collar, and the tiny button on top of the collar is the power button.
1. When the Philips shb4205bk headset is off, press and hold the power button for about 2 seconds until the headset indicator flashes white and the headset vibrates twice, indicating that the headset is powered on normally and enters into pairing mode.
Tips: The headset cannot be turned on when the headset's battery is low, so charge the headset first and try turning it on after removing the power.
2. When the headset is not in use, you can turn the headset off by pressing the power button for about 6 seconds until the headset lights up in white and then goes out and vibrates twice, indicating that the headset is turned off.
Note: If the headset can't find any Bluetooth devices within range within 5 minutes, it will automatically turn off to save battery power.