Clarion WH105-H Replacement RF Wireless Headphones For use with your existing Clarion WH105RF Wireless Kit Replace or add more headphones to your system Features foam on-the-ear cups, a plastic adjustable headband, volume control, power switch, and a battery compartment for two "AAA" alkaline batteries (not included). Automatic level control to prevent input signal overloading Automatic On/Off microswitch in the left earcup saves battery power by turning on the headphones only when they are being worn.