link 1.0 Djem Guerreru Inc. https://www.djemguerreru.com 21600 JOITO's https://www.joitos.com https://cdn.joitos.com/GENERAL/13/136/1365/13653829.V0.jpg 400 250 https://www.joitos.com/item/30702612/Universal%2DHandset%2Dand%2DHeadset%2DAmplifier - Amplifies incoming voices up to 170 times (45+ dB), so you hear every word with unmatched clarity- Selectable digital tone enhancement allows you to boost and enrich the speech fequencies you cant hear well, making difficult to hear words intelligible again- Automatic gain control optimizes sound level for superior listening comfort- Easy headset/handset selection button for extra convenience- Latest digital sound processing technology eliminates virtually all distortion, echo effects and unwanted static commonly found in other ordinary amplifiers- Works with virtually all business telephones and headsets; it connects between phones handset/headset and base- AC adapter included, battery (9V) optional 73.69 USD 1 Electronics & computer--Phone & telecom--Other