Garrett MS-2 Headphones with AT water tight connector Garrett MS-2 Headphones with water tight connector for use with ATX, AT Pro, AT Pro International, AT Gold or Sea Hunter, Garrett AT 2-pin connector Volume control. Adjust signal levels to suit individual hearing requirements and to enhance weak signals. Comfortable headband and ear cushions. Reinforced 10-foot coiled cord with right angle. Speaker impedance: 8 ohms Frequency response: 30-18,000 Hz.