Achieve Seamle Shading 4 Colors Portable Breathable 180ma/h Sleep Mask Bule Goggles Adjustable Widened Elastic Band Not Stuffy Description: Product Name: Music Eye Mask Product Color: Black, Gray, Blue, Music Playback Time: Maximum Sound 7H, Medium Volume 10 Hours Microphone Distance: 1 Meter bluetooth-compatible 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 Transmiion Power: 6dB Charging Time: 1-2 Hours User Crowd: Suitable For The Whole Family Product Function: Relieve Fatigue, Etc. Specifications: 1. Lovely Shading Eye Mask, Exquisite Stitching Proce, Fine Stitching Proce, Strong And Durable 2. High-quality Cotton Fabric, Beautiful And Practical, The Shading Rate Is 99.9%, And It Can Be Used In All Seasons 3. 360 Surround Eye Protection, Relieve Eye Fatigue, Bid Farewell To Dark Circles 4. Filled With Fiber Inside, Effective Shading, S-shaped 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 Seamle Shading, Improves Sleep Quality And Sleeps Comfortably Without Boredom 5. Soft As Baby Skin, Moisture-absorbing And Breathable, Sweat-wicking And Heat-diipating, Comfortable To Wear, Almost Zero Preure, Relieve Eye Fatigue And Say Goodbye To Dark Circles 6. No Feeling Of Tightne, Adjustable Widened Elastic Band, Free Adjustment According To The Size Of The Head, Comfortable To Wear Package Included: 1*eye Mask