360° Blackout & 3D Design AURTEC blackout sleep eye mask has a 3D contour design, with light weight, no pressure on the eyes. 360° blackout to solve the problem of light interference, create a comfortable sleeping environment anytime, anywhere. Long Lasting Battery This product has built-in battery that supports more than 20 hours continuous play, and it only takes 2 hours to fully charge. Specifications: Package Dimensions : 28 x 11 x 3.2 cm / 11 x 4.3 x 1.3 inches Weight: 100 grams / 0.22 pounds Bluetooth Version : 5.2 Bluetooth Pairing Name : Musical Eye Mask(If a pass code is asked, enter ”0000”) Battery Capacity: 400mAh Charging Time: 2 hours Listening Time: 20+ hours Timer: 30/60/120/180/240 min White Noise & Bluetooth Two modes for you to choose. The white noise mode includes 20 soothing sounds and 4 relaxing music. AURTEC Sleep Mask * 1 Charging Cable * 1 User Manual * 1 Waterproof Bag*1