The HW540 has been designed for use in customer care centers, help desks, telesales, and customer service centers where users will encounter the rigors of call-intensive environments. To this end, the HW540 has been designed to help minimize operational disruptions and downtime while also maintaining the comfort of those using it. The HW540 has been designed with a flexible and noise-canceling mic, a soft ear cushion, and Quick Disconnect. Wideband audio (up to 6,800 Hz) helps deliver rich and clear audio and reduce listening fatigue, while SoundGuard technology helps protect against noise spikes above 118 dBA. The HW540 is also durable and has been constructed with laser-welding and metal joints.