Product Name: Music Eye MaskProduct Color: Black, Gray, Blue, PinkMusic Playback Time: Maximum Sound 7H, Medium Volume 10 HoursMicrophone Distance: 1 MeterBluetooth-compatible Standby Time: 72HBattery Capacity: 180ma/hBattery Power: 0.55WSpeaker Impedance: 32 OhmsSpeaker Power: 0.02WFrequency Range: 2.4-2.4835GHzSensitivity: 45dbTransmission Power: 6dBCharging Time: 1-2 HoursUser Crowd: Suitable For The Whole FamilyProduct Function: Relieve Fatigue, Etc.Specifications:1. Lovely Shading Eye Mask, Exquisite Stitching Process, Fine Stitching Process, Strong And Durable2. High-quality Cotton Fabric, Beautiful And Practical, The Shading Rate Is 99.9%, And It Can Be Used In All Seasons3. 360 Surround Eye Protection, Relieve Eye Fatigue, Bid Farewell To Dark Circles4. Filled With Fiber Inside, Effective Shading, S-shaped Streamline Cutting, Fits The Contours Of The Face Without Light Leakage, Unique Cutting For The Bridge Of The Nose, Fits The Curve Of The Nose Wing, Realizes Seamless Shading, Improves Sleep Quality And Sleeps Comfortably Without Boredom5. Soft As Baby Skin, Moisture-absorbing And Breathable, Sweat-wicking And Heat-dissipating, Comfortable To Wear, Almost Zero Pressure, Relieve Eye Fatigue And Say Goodbye To Dark Circles6. No Feeling Of Tightness, Adjustable Widened Elastic Band, Free Adjustment According To The Size Of The Head, Comfortable To WearPackage Included:1*eye Mask