Stable transmission and clear sound for reliable voice quality and audio performance in calls, recordings, and media playback. Headphone and microphone 2 in 1 USB sound card: an external sound card adapter that combines headphone output and microphone input in a single USB device. Metal casing for durability and longterm use, providing rugged protection in daily operation. Broad compatibility: supports laptops, desktop computers, amplifier devices, speakers, and more. Compact and robust external unit that fits easily into various audio setups and workflows. Use scenarios Remote work and online meetings: plug the device into a computer to ensure stable audio transmission and clear microphone pickup for teammates and clients. Gaming, streaming, and voice chats: use the 2 in 1 USB sound card to improve spoken audio quality and overall sound clarity during sessions. Home audio setups and presentations: connect to amplifiers or speakers to enhance playback and deliver clearer sound in small gatherings or demonstrations.