Sennheiser SD 10 HS Enterprise VOIP Headset

The Sennheiser SD 10 HS is a single-sided DECT wireless headset designed as the wearable component of Sennheiser's SD Pro system — it does not operate independently without a compatible base station. Its DECT radio technology operates in the 1.9 GHz band, offering lower interference susceptibility than 2.4 GHz Bluetooth in high-density office environments. The 12-hour rated battery life is the operational ceiling for a full working day, and the integrated Active Guard circuit provides hardware-level acoustical shock protection against sudden SPL spikes — a meaningful feature in enterprise telephony where line noise events are unpredictable. The ultra noise-cancelling microphone is directionally tuned to attenuate ambient office noise at the microphone capsule itself, not through post-processing.

This headset is built for contact center agents, VOIP-heavy enterprise users, and anyone who needs untethered mobility during extended phone shifts. The flex-a-fit wearing system — headband or ear hook — accommodates different wearing preferences without requiring a separate headset purchase, though the neckband option requires an add-on accessory. The single-sided design keeps the non-phone ear open, which suits environments where floor awareness matters. It is not a consumer audio product and makes no claim to music fidelity — the entire design is optimized around voice-band frequency response, call clarity, and wearing comfort over an eight-to-twelve-hour shift.