Professional Wireless Headset Bluetooth Single-Ear Call Noise Reduction Uni-Directional Microphone Equipped Office Use Ultra-Lightweight Up to 45 Hours of Use Hands-Free Calling HS SE Model Black Headset for comfortable calls, compatible with web conferencing, PCs, smartphones/PCs/tablets. - Model: HS SE - Input Voltage: 5V 0.5A - Design: Wireless Headset - Color: Black - Ear Placement: On-Ear I'm selling this because it doesn't seem to work well with my company's PC. I've confirmed that it works without problems on my personal PC. I've used it for about a week in practice. Thank you for looking.