*Best sound quality *Includes 4 connection cables *T-coil compatible *Binaural design *Push-button slider to cinch neckloop for closer microphone placement *Trouble-free operation *Offers a 30 dB max gain *Rotary volume control for easy adjustment and multiple levels of amplification *Built-in microphone 8Quick release feature 8Battery powered with (2) AAA batteries * size 1 ¼” x 2 ½” x ¾” *Color: Black *1-year warranty