PHILIPS Philips SmartSleep Deep Sleep Headband Also, many wonderful miscellaneous goods are on sale♪ → #Kurikuri ← Tap ^_^ ¥ 30,900 M size [Unopened], but the shrink wrap is partially torn. Please check the condition in the photos. By wearing it to sleep, it detects deep sleep from brain waves. It promotes the extension of deep sleep with audio tones. Track your daily sleep score with the dedicated app. Experience a refreshing awakening.