<b>Upgraded bluetooth sleeping eye mask features in latest Bluetooth V5.0 technology, simply sync to any bluetooth device in seconds, hands-free connectivity including decline/accept phone calls and listen to music wirelessly up to 20 meters.</b><br><br> <b>With gel pack can be used as cold eye mask or warm eye mask. 2 Pieces can be used separately or together, perfect for puffy eyes & dark circles. One size eye sleep cover fit most heads, perfect for both men and women!</b><br><br> <b>More Features:</b><br>Color: Gray<br> √Support bluetooth communication and bluetooth music<br> √Updated 3D eye mask-perfect for side sleepers!<br> √Update battery & USB charging port-last whole night playing!<br> √Adjutable sizes-fit for various heads!<br> √Gel eye mask-hand-crafted gel insert promote eyes blood circulation and relieve eye muscle fatigue; Perfect for puffy eyes & dark circles.<br> √Extremely soft and smooth material<br> √Ultra-thin headphones<br><br> <b>Specification:</b><br> Material: velvet, cotton<br> Size: One size fit all heads<br> Bluetooth Version: 5.0<br> Frequency: 2.402Ghz - 2.480Ghz<br> Speaker Unit: 32Ω / 10mm<br> Transmission Distance: 20m/66ft<br> Headphone Battery: 3.7 V 150 mAh Li-polymer battery<br> Play Time: Up to 13 hours(Continuous Working)<br> Standby Time: Up to 350 hours<br> Charging Time: 2 hours<br><br> <b>Package Includes:</b><br> 1 x Wireless Musical Eye Mask<br> 1 x Gel Sleep Mask<br> 1 x USB Charging Cable<br> 1 x User Manual<br><br> <b>Warm Tips:</b><br> Before you start using the eye mask, kindly please use attached USB cable to charge it first. <br> Wash the Musical eye mask after removing the headphones from the pouches.<br> Hand wash only.<br><br>