Key benefits Built with Bluetooth 5.1 for lower power consumption than Bluetooth 4.2, faster data transmission, stronger antiinterference, and a more stable wireless connection. 40 mm dynamic driver paired with a large ear cup design delivers strong bass and lively overall performance. Earmuffs are made from soft material; the earphone design is precise, delicate, and compact. HiFi lossless audio provides a comfortable listening experience for long listening sessions. Key specifications Bluetooth: 5.1 Driver: 40 mm dynamic Ear cushions: soft material; design is precise, delicate, and compact Sound: HiFi lossless Usage scenarios Home or office listening: enjoy quality wireless audio for music and videos with a stable connection. On the go: ideal for daily commuting or travel with Bluetoothenabled devices such as smartphones or tablets. Entertainment on Bluetooth devices: suitable for watching videos or casual gaming where wireless convenience is valued.