The Sennheiser HSP Essential Omni (black, 3-pin) is a lightweight neckband headset microphone for presenters, fitness instructors, worship leaders and performers who need hands-free speech pickup. It uses the newly developed KE 4 condenser capsule with an omnidirectional pickup pattern, which makes mic placement at the cheek forgiving, and it handles up to 148 dB SPL without distortion. The flexible, ergonomic neckband adapts to a range of head sizes for a secure, comfortable fit even during long sessions, and the black finish suits stage and broadcast use. A patented umbrella diaphragm and rubber sealing ring make it sweat-resistant, the coating is allergy-friendly, and every part can be replaced separately. This version has a 3-pin connector for Sennheiser wireless bodypack transmitters. Frequency response is 20 - 20,000 Hz, nominal impedance 1,000 ohms, the cable is 1.3 m long, and the microphone weighs only 25 g. A beige version is also available.