Jabra BIZ 2400 II Mono USB Headset | Ultra Noise-Canceling Mic | FreeSpin™ Boom | Kevlar-Reinforced Cord | Microsoft Teams Certified | 3-Year Warranty | 2496-823-309

Jabra BIZ 2400 II Mono USB Headset – 2496-823-309

The Jabra BIZ 2400 II Mono USB Headset (2496-823-309) is a professional wired mono headset designed for contact centres, customer service operations, office environments and PC-based business communications. It combines professional voice quality with a durable construction, flexible wearing options and convenient USB controls, making it suitable for users who spend extended periods handling calls.

The headset uses a noise-cancelling, unidirectional microphone designed to focus on the user’s voice while reducing unwanted ambient sound. The microphone has a frequency range of approximately 101Hz–8kHz and a sensitivity of -19dB V/Pa at 1kHz according to Jabra’s USB technical specifications, providing a dedicated voice-communication solution for professional calling environments.

The microphone is mounted on a flexible 360° FreeSpin™ boom arm that allows the boom to be positioned around the headset without being restricted to a fixed orientation. The flexible boom construction helps users position the microphone close to the mouth while maintaining comfortable movement during extended calls.

The mono headset provides a 3-in-1 wearing configuration, allowing users to select a headband, ear hook or neckband depending on their working environment and personal preference. The headband incorporates padding, while the headset uses leatherette ear cushioning for additional comfort during prolonged use.

Audio is delivered through a 30mm speaker with a maximum input power of 20mW. The USB configuration supports a voice bandwidth of approximately 100Hz–6.8kHz and a music bandwidth of 80Hz–16kHz, providing clear voice reproduction while also supporting broader audio playback.

The headset connects through USB and includes a dedicated USB control unit. The controller provides volume up/down, mute, answer/end/reject and hold/resume call functions. It also includes programmable buttons that can be configured for supported contact-centre applications, including integration with solutions such as Cisco Finesse and other supported workflows.

The 2496-823-309 configuration is the Microsoft-focused BIZ 2400 II USB model. Jabra’s technical documentation identifies this exact SKU as Jabra Biz 2400 II Mono USB 3-1, CC MS and states that the USB CC variants have received Microsoft Teams certification.

Durability is a key feature of the headset, with a Kevlar®-reinforced cord designed to withstand everyday strain and reduce the likelihood of cord damage. The headset also incorporates durable materials including PC/ABS and Luran, supporting its suitability for professional contact-centre deployments.

For hearing protection, the headset incorporates PeakStop™ acoustic protection with a maximum sound-pressure level of 118dBA SPL RMS. The USB version is also specified as compliant with Noise at Work and G616 requirements, helping protect users from excessive sound levels during extended calling sessions.

The headset weighs approximately 61g with the cord and 45g without the cord. Its operating cord length is approximately 2.3m, providing sufficient reach for typical desktop PC and contact-centre workstation configurations.

The Jabra BIZ 2400 II Mono USB 3-in-1 CC MS is supplied as a professional USB headset solution with the headset, CC controller, ear hook, neckband, documentation and carrying pouch. The product is covered by a 3-year limited warranty, supporting long-term deployment in business and contact-centre environments.

Key Features

• Jabra BIZ 2400 II Mono USB 3-in-1 CC MS
• Part Number / SKU: 2496-823-309
• Microsoft Teams certified
• Professional contact-centre headset
• Mono audio configuration
• USB connectivity
• 3-in-1 wearing style
• Headband, ear hook and neckband options
• Noise-cancelling unidirectional microphone
• 101Hz–8kHz microphone frequency range
• -19dB V/Pa microphone sensitivity at 1kHz
• 360° FreeSpin™ boom arm
• Flexible microphone boom
• 30mm speaker
• 20mW maximum speaker input power
• 100Hz–6.8kHz voice bandwidth
• 80Hz–16kHz music bandwidth
• Kevlar®-reinforced cord
• Integrated USB control unit
• Programmable buttons
• Volume up/down controls
• Mute control
• Answer/end/reject call control
• Hold/resume call control
• PeakStop™ 118dBA SPL RMS
• Noise at Work compliant
• G616 compliant
• Leatherette ear cushion
• Padded headband
• 61g weight with cord
• 45g weight without cord
• 2.3m operating cord length
• PC/ABS and Luran construction
• 3-year limited warranty