Features 1. This microphone is compatible with the W4RT One Big Punch OBP modification. 2. Stock or replacement handheld microphone for FT-817, FT-900, and FT-450D models with modular RJ-45 connector. 3. Simple installation process with no need for complicated tools, providing convenience in operation. 4. Constructed from high-quality ABS material for enhanced durability and extended service life. 5. Offers stable performance, professional functionality, and high reliability. Specification Condition: Item Type: Radio Handheld Microphone Material: ABS Color: As shown in picture Compatibility: Designed to fit Yaesu FT-817, FT-900, and FT-450D models Operation: 1. When transmitting, keep the radio in a vertical position and maintain a distance of 2.5 to 5 cm between the microphone and the mouth. Ensure the radio is at least 2.5 cm away from the head or body during transmission. If carried on the body, keep the antenna at least 2.5 cm away from the body while transmitting. 2. Avoid frequent power cycling during use and adjust the volume to a level suitable for your hearing. Package List 1 x Handheld Microphone