The ClearSounds HD500 Handsfree Binaural Headset is designed for phones with a 2.5mm headset jack. It offers improved sound clarity even in noisy environments, allowing you to have clear conversations without any distractions. The headset features a noise-cancelling, boom-style microphone that cuts down on background noise and delivers crisp, clear sound to the person you are talking to. It can be easily switched to fit either ear, providing flexibility and comfort during extended phone calls. The HD500 is a non-amplified headset, making it a perfect accessory for your mobile, cordless, or corded phone. With its sleek black design and lightweight construction, this headset is a reliable and convenient hands-free solution for your communication needs.