New Smart Hearing comfort HEARING AIDS (not amplifiers), opened just to charge, (NEVER USED), Charging for 2 hours gives you 30 hours use, selling only because went passed 14 day return, brought for me by somebody thinking i needed them (jokes on them i never listen ), no manual adjustment , AI tech learns about what you can hear.no background noise, has various settings. Ajdust volume for your comfort , still selling online for £150 , just put in Smart Hearing and see what they say.