Xiaomi Bluetooth 5.3 Wireless Headset Sleep Aid Music Eye Masks Rechargeable Sports Headband Durable Nap Blackout Eyes Mask Color:Grey Q: How do you ensure

Q: How do you ensure quality

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Xiaomi Bluetooth 5.3 Wireless Headset Sleep Aid Music Eye Masks Rechargeable Sports Headband Durable Nap Blackout Eyes Mask Color:Grey Q: How do you ensureSPECIFICATIONS Active Noise Cancellation: Yes Battery life up to[hours]: 10h Bluetooth Version: 5. 3 Brand Name: MIJIA Category: Earphones & Headphones Certification: CE Charging Method: cable Choice: yes Codecs: AAC Color: Black Grey Communication: WireLess Connectors: USB Control Button: Yes Driver Diameter: 30 Earcups Type: Sealed Features: Active Noice Cancelling,waterproof Headphone Pads Material: Fabric Hign concerned Chemical: None Impedance