1. Compatible replacement for ICOM ID-31A, ID-51A, ID-52A, IP100H, and IP501H radios. Designed to replace original ICOM radio compact speaker microphones with reliable performance and compact design. 2. Replacement for ICOM HM-186LS, HM-183LS, and HM-75LS handheld speaker microphones. Features a rotating swivel clip with 8 click positions and a right-angle 2-pin connector to enhance transmit and receive quality for ICOM handheld radios. 3. Easy and convenient to wear. Secure the compact speaker microphone in the desired position using the swivel clip for clear transmission and reception, even in noisy environments. Helps maintain privacy during communication. 4. Ideal for use in security, police, nightclubs, bars, hotels, restaurants, warehouse, supermarket, hiking, hunting, travel, and other high-noise environments.