The Gemini Basic offers incredible value for money without compromising on quality. Its stylish new design and rugged build quality are sure to make it a popular choice for buyers on a limited budget. Triple standard message waiting (high voltage, reverse polarity & voltage drop). – Headset port. – Locking mute button with LED indicator. – ELR/TBR switchable. – Last number redial. – Recall button. – Ringer volume adjust. – Ringer indicator light. – Wall mountable – no additional bracket required. – Hearing aid compatible.