Bang & Olufsen Beoplay H4 Guide De Démarrage Rapide page 5

Turn on and off
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1477_1609_Beoplay_H4_A_Quick start Guide.indd 5
Short press center button to turn on headphone. To turn off,
press Vol+ and Vol- simultaneously for 5 seconds or
headphone will automatically turn off if Bluetooth is
disconnected for 15 mins.
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2016-10-12 14:29:37