TIMER FUNCTION: Bone conduction speaker has a timer function, double click the volume p button to automatically timer off after 60min and double click the volume minus button to automatically timer off after 30 min. Make sure this fits by entering your model number. BONE CONDUCTION SPEAKER: This bone conduction speaker uses the latest bone conduction technology, placed under the pillow can vibrate in a compact way through the pillow to send the sound into your ears, eliminating the headphones on the ear causing pain and at the same time you can enjoy the sound you want. LATEST TECHNOLOGY: The Mini Pillow Speaker uses the latest technology to deliver sound through your pillow to your ears in a vibrating, compact and portable way. TIMER FUNCTION: Bone conduction speaker has a timer function, double click the volume p button to automatically timer off after 60min and double click the volume minus button to automatically timer off after 30 min.