Garrett MS-3 Z-Lynk Headphones for AT MAX and APEX Model_Legend an interior carabiner to secure

an interior carabiner to secure rings

Vibration Response lets you feel the target signal

Fully waterproof to meet the IP67 rating

they are great for noisy environment

That being said

Garrett MS-3 Z-Lynk Headphones for AT MAX and APEX Model_Legend an interior carabiner to secureGarrett MS 3 Z Lynk Wireless Headphones for use with AT MAX and APEX PN: 1627710 Built in Z Lynk receiver. High fidelity audio. Volume control. Adjust signal levels to suit individual hearing requirements and to enhance weak signals. Comfortable headband and ear cushions. Folds down for easy storage. USB charging cable included. Speaker impedance: 8 ohms Frequency response: 30 18,000 Hz. Compatible with Garrett AT MAX and Garrett APEX.