Product Description Material: Cotton Colour: Black Speaker: 32 ohms Battery: 180mAh, charge for 1.5 hours, play for about 10 hours (not included) Package Contents: 1*Wireless Bluetooth Sleeping Eye Mask 1. After long-term research, we listen to your feedback and data, we update every detail and make a wireless music sleep earphone eye mask that is more suitable for you. 2.Suitable for problematicsleep earphone mask adopts 3D ergonomic technology for eye area and blocks the light to create an absolute dark area and listen to music without wearing extra earphones, let you enjoy a sweet deep sleep, very Good solution to sleep problems. Greatfor home, office, air travel, business locations, relaxation, mediation and insomnia. 3. Using the updated 5.0 technology, the connection is stable, high-speed long-distance smooth transmission, low power consumption, bringing an excellent stereoexperience. Built-in adjustable high-quality speaker and microphone for clear hands-free calls. The sleep mask is washable, and you can take out the bluetooth module and wires. It is recommended to hand wash the mask in warm water. 4. Super soft andperfect for side sleeping sleep headphones Bluetooth sleep mask is designed with breathable material and comfortable feel, breathable slow rebound memory foam and smooth fabric let you release facial pressure and help fall asleep quickly. The bluetoothcontrol is in the middle, perfect for side sleeping. 5. Renewal battery Built-in high-quality high-performance battery charges about 1.5 hours, provides more than 10 hours of playback time, will not be woken up at night, you can sleep peacefully atnight Bluetooth version: 5.0 Bluetooth protocol: AGHSP Bluetooth solution: Lanxun Bluetooth transmission distance: 10 meters Headphone Channel: Stereo (2.0) Music playback time: maximum sound 7H, medium volume 10 hours Microphone distance: 1 meter Bluetooth standby time: 72H Battery capacity: 180ma/h Battery power: 0.55W Speaker impedance: 32 ohms Speaker power: 0.02W Frequency range: 2.4-2.4835GHz Sensitivity: 45db Transmission power: 6dB Audio output distortion: 0.6% Audio output SNR: 93dB Charging time: 1-2 hours Maximum input voltage: DC 5V Maximum input current: 150mah Maximum input power: 0.55W Shipment Quantity: 1 piece Package Contents: Only the above package content, other products are not included. Size: 47*11CM (Reminder: The size is measured manually, please allow 1-2cm measurement error) Colour: Black (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.) Products from LUOLV's store