How to factory reset Bose headphones & speakers?

Reset Bluetooth Pairing on your Bose Headphone / Speaker 

Bose QuietComfort 35 (QC35): 
1. Power on your headset
2. Slide the Power switch to the Bluetooth icon and hold it for 10 seconds until you hear Bluetooth device list cleared.

Bose 700: 
1. Press and hold the Power/Bluetooth® button until you hear “Bluetooth device list cleared” and the Bluetooth light slowly pulses blue
2. Delete your headphones from your device’s Bluetooth list. The headphones are now ready to connect.

Bose QuietControl 30:
1. Power off the headphones
2. Press and hold the Power/Bluetooth® button for 10 seconds, until you hear "Bluetooth® device list cleared"
3. Delete your Bose® QuietControl® headphones from the Bluetooth® list on your device. All devices are cleared and the headphones are ready to pair a new device

Bose SoundLink Revolve (+)/Bose SoundLink Mini (II)/Bose SoundLink Color (II)
1. On the speaker, press an hold the bluetooth® button for 10 seconds, until you hear "Bluetooth® device list cleard"
2. On your mobile device, delete the speaker from the Bluetooth® menu. All paired mobile device are cleared and the speaker is read to pair again.