Kimhost® OBT039 Earhook Earphone

The H681-RJ works with virtually all modern desk phones featuring an RJ9 headset port, including Cisco, Yealink, Polycom, Avaya, Nortel, Panasonic, NEC, and Toshiba business phones. If your phone has an RJ9 port (the small modular jack), the H681-RJ will work. We recommend verifying your specific phone model on our compatibility list or contacting our support team.

The uni-directional noise-canceling microphone is designed to pick up sound primarily from the direction you're facing (your mouth) while rejecting sounds from the sides and rear. This means your voice comes through crystal-clear while office background noise is significantly reduced. Your callers will hear you clearly even in moderately noisy environments.

Absolutely. The H681-RJ weighs less than 30 grams and features padded, comfortable ear cups. With proper fit and occasional adjustment, most users report wearing the headset comfortably for 8+ hour shifts. We recommend trying different wearing configurations (over-the-head, behind-the-neck) to find your personal preference.

The H681-RJ is designed for traditional landline phones and IP desk phones with RJ9 headset ports. Some VoIP systems may require an adapter or specific configuration. Contact our support team with your VoIP system details for compatibility verification.

The standard cable is 1.5 meters (approximately 5 feet). This reaches most desk phone placements. Extension cables are available separately if you need additional length. We recommend keeping the headset within 2-3 feet of the phone for optimal microphone performance.

Wired headsets offer instant connection, zero battery management, and absolutely reliable audio with no interference. Wireless headsets offer mobility and freedom of movement. The H681-RJ is ideal for professionals who work primarily at their desks and prioritize reliability and cost-effectiveness. If you need to move frequently around the office, wireless may be worth the additional investment.

The H681-RJ is built with professional-grade materials designed for intensive daily use. With proper care, most units function reliably for 3-5 years of continuous use. We've had reports from call centers operating units for 5+ years with minimal issues. Typical wear points are the headband and ear cup padding, which can be replaced separately if needed.

The H681-RJ is a monaural (single-ear) design. This allows users to maintain situational awareness of their office environment during calls. Binaural (dual-ear) models are available separately if you prefer complete audio immersion.

First, verify the RJ9 connector is fully inserted and clicks into place. Ensure your phone's headset/microphone settings are enabled (not on speakerphone mode). Try a different phone to isolate whether the issue is with the headset or phone. Contact our support team with your phone model and specific issue for technical troubleshooting.

Yes. The H681-RJ requires no battery charging, eliminating e-waste from battery disposal and reducing power consumption. For organizations purchasing dozens or hundreds of headsets, the environmental impact of battery-free operation is significant.