EM4 Bluetooth 5.2 Eye Mask Wireless Headphone Eye Protection for Sleep Office Lunch Break(Black) text_field Made of high-quality PU leather

Made of high-quality PU leather material

Monitor your heart rate throughout the day and generate real-time heart rate curves

34 W for third gear

power saving

Type: Front Buckle

EM4 Bluetooth 5.2 Eye Mask Wireless Headphone Eye Protection for Sleep Office Lunch Break(Black) text_field Made of high-quality PU leather1. 3D ergonomic design, fit the face, block light, let you fall asleep quickly 2. Built in HIFI speaker and MIC, enjoy music and make hands free calls easily 3. Super soft velvet, plenty of room for the nose, no pressure around the eyes 4. Adjustable magic sticker, suitable for any head size 5. Applicable products: mobile phones, tablet computers, laptops and desktop computers with bluetooth function (computers without bluetooth function need to be