Comfortable overear fit The headset uses an ergonomic design with soft earmuffs that simulate human skin texture for longlasting comfort. Soft protein leather earpads and a retractable headband reduce pressure on the ears, providing a comfortable fit for extended wear without discomfort. Bluetooth 5.0 and broad compatibility Bluetooth 5.0 chipset delivers lower power consumption and broad compatibility. HiFi stereo sound with a 40mm diaphragm driver provides rich stereo output. It works wirelessly with mobile phones, PCs, notebooks, or any device that has Bluetooth or a 3.5mm audio jack. Builtin microphone for hands calls Builtin microphone supports hands calls and voice reporting of the incoming call number (caller ID). The latest enhanced technology helps your voice sound clearer in noisy environments. Multifunction and TF card playback The headset includes a builtin TF/SD card slot, allowing MP3 playback directly from a loaded card. Use scenarios Commuting or traveling: enjoy wireless listening and hands calls on the go. Home office or study: clear voice for online meetings and calls with reliable microphone performance. Offline music playback: insert a TF/SD card to listen to MP3 music directly without needing Bluetooth.