Jabra Biz 2400 II Mono 3-in-1, NC

Jabra Biz 2400 II Mono 3-in-1, NC

The Jabra Biz 2400 II Mono 3-in-1, NC is a versatile, professional headset designed for users who switch between a desk phone, computer, and mobile device throughout the day. The “3‑in‑1” name means one headset works with all three connection types – RJ9 for desk phones, USB for PCs, and 3.5mm for smartphones and tablets. The mono (single‑ear) design keeps you aware of your surroundings, while the advanced noise‑canceling (NC) microphone filters out background chatter so your callers hear only you. Whether you’re in a busy call center, a home office, or a reception desk, the Biz 2400 II delivers crystal‑clear calls and all‑day comfort.

How It Works

The headset comes with a modular cable system that lets you switch between devices in seconds. Use the RJ9 coiled cord to connect directly to your desk phone’s handset port. Swap to the USB cable for plug‑and‑play connection to your PC or Mac – no drivers needed. For mobile calls, use the 3.5mm cable to connect to your smartphone or tablet. The noise‑canceling microphone boom rotates 270 degrees, so you can wear it on the left or right side. The mono speaker delivers clear audio, and the leatherette ear cushion with memory foam ensures comfort during long shifts. An inline volume and mute control pod is conveniently placed on the cord. For other flexible communication solutions that simplify your workspace, explore our selection of corded headsets at FindHeadsets.

Compatibility & Design

The Jabra Biz 2400 II Mono 3-in-1, NC works with virtually any device:

Desk phones with a standard RJ9 handset port (most Avaya, Cisco, Panasonic, Mitel, NEC models)

PCs and Macs via USB (Windows, macOS, Linux – plug‑and‑play, UC certified for Teams, Zoom, etc.)

Smartphones and tablets with a 3.5mm headset jack (iPhone, Android, iPad)

The headband is adjustable with a soft leatherette padding, and the ear cushion is made from memory foam covered in leatherette. The mono design is lightweight (approximately 3.5 ounces), and the microphone boom is flexible and durable. The headset is available in black. The cables are quick‑disconnect (QD), so you can swap between RJ9, USB, and 3.5mm without unplugging from the headset. The noise‑canceling microphone reduces background noise by up to 20dB, ideal for open offices.

Why Choose This Product

Most professional headsets only work with one type of device. If you regularly use a desk phone, computer, and mobile phone, you typically need three separate headsets. The Biz 2400 II 3‑in‑1 eliminates that hassle and expense. The noise‑canceling microphone is exceptional – your callers will not hear keyboard clicks, office chatter, or HVAC noise. The mono design is perfect for users who need to stay aware of their environment, such as receptionists or managers. The headset is also durable, rated for over 100,000 flex cycles on the boom and reinforced cabling. For IT managers, standardizing on a single 3‑in‑1 headset simplifies inventory and support. The “II” version improves audio quality and comfort over the original Biz 2400.