- W6 handset has an amplified receiver controlled by a rotary (thumb wheel) volume control - Electronic circuitry is completely contained in the handset - Improve listening volume up to 20 dB for clearer reception - Add receiver volume in noisy surroundings poor line quality and for the hearing impaired - Includes a carbon compatible transmitter for clear transmission and are hearing aid compatible - Volume level is fixed until the thumb wheel is rotated - Quick and easy installation the Walker W6 amplified handsets simply replace your old handset