Sensitivity: 105 ± 2 dB
Frequency Response Range: 20 – 2000 Hz
Resistance: 32 Ω
With Microphone: Yes
1 x Bluetooth eye mask
Comfortable Material and Bluetooth: Made of soft and comfortable memory foam, separate you from the outside bright and voice, help you to be relaxed in the music and perfectly have a sound sleep. True HD high fidelity sound featuring the latest Bluetooth 4.2 technology that produces great sound quality, Bluetooth can pair devices easily.
Built-in high-quality speakers and microphone: It makes the voice clearly and you can adjust the position of the two speakers, or adjust the size of this eye patch to suit for use.
Built-in 200 mAh rechargeable battery, powered by USB charging: It has 3 buttons for controlling: PLAY/STOP button, Adjust Volume and Pre/Next Song. Works with any Bluetooth enabled device. Enjoy about 9-10 hours of premium quality talk/play time (full charge in around 2 hours), up to 60 hours standby time.
Washable Bluetooth Eye Mask: The speakers and mic are removable if you want to wash the eye mask.
Bluetooth Sleeping Eye Cover: Perfect for air travel, relaxation, meditation, insomnia. Sleep in a light blocked world whenever and wherever.