SUPERIOR SOUND: These Technics earbuds feature a 6mm driver with acoustic control chamber and harmoniser to deliver stunningly true-to-life sound, while LDAC support provides exceptional audio quality. NOISE CANCELLING: Active Noise Cancelling technology using a feed forward mic and digital processing eliminates unwanted sounds and lets you enjoy music and other content on the go. OPTIMAL COMFORT & FIT: These compact earbuds have an all-day comfort fit design, with 4 silicone earpiece sizes for a customisable fit and superior insulation. USER-FRIENDLY FEATURES: These earphones include Multipoint pairing to connect to 3 Bluetooth devices at once, and a Technics app to let you tailor noise cancelling and sound modes. LONG BATTERY LIFE: With up to 5.5 hours on a single charge with ANC on, and up to 18 hours with the compact charging case, you won't have to worry about any interruptions to your audio. MAINTENANCE: Regular cleaning is necessary to maintain sound performance, please clean both the earpieces and the charging terminals following the maintenance procedure in the manual. If you see a rapid flashing blue light on the charging cradle, the earbuds are not inserted correctly, or the charging terminals need cleaning.