This lightweight portable telephone amplifier is designed to strap over a standard telephone handset using the adjustable rubber strap. The amplifier can boost the incoming speech volume up to 20dB and it also has tone control with three positions available Bass/Normal/Treble. Supplied with a soft carry case for transport. For further information please contact your local shop or call 01908 644133. This product is VAT exempt to eligible customers. To obtain VAT exemption please complete the VAT exemption form during checkout.