Mini and Small: The wireless invisible earbuds are comfortable and stress-free, and ear buds weigh merely 0.1 oz, ideal for small ear canals. When you're wearing hidden earbuds at work, it's invisible and hardly noticeablePremium Sound Quality: These sleeping earbuds provide you with high quality audio enjoyment. Whale hollow stereo surround sound, immersive music enjoymentHow to Pair and Disconnect Bluetooth: When the mini earbuds are removed from the charging case, it will be automatically turned on. When the red and blue lights alternately flash, it will enter the pairing state. Go to the Bluetooth setting interface of the device and click "SK19" to complete the pairing. When pairing a new Bluetooth device, you need to disconnect the previous Bluetooth deviceUp to 24 Hours Battery Life & Fast Charging: The invisible ear buds battery lasts for 4h, the case battery lasts for 20h, and the small earbuds provides all-day audio. When you need more power, you can quickly recharge the charging case in an hourDesigned for Sleeping: If you need to listen to music while sleeping, this Invisible mini earbuds is a good choice for you. This sleep headphones improves the comfort design, does not feel foreign body when sleeping on the side, and fits the ear betterBluetooth 5.3 & Clear Calls: Excellent physical noise reduction combined with acoustic noise cancellation technology, the microphone of the sleeping earphones can also reduce noise in noisy environments, just like talking face to face, the call is clear.