4 tone settings for a customized listening experience & 95dB extra-loud ringer with adjustable tones | Amplifies incoming sound up to 50+dB & outgoing speech up to 15dB for others to hear better | Includes dual-power battery allowing calls when power is out & belt clip | High-contrast Caller ID screen with large font & talking Caller ID | Hearing aid compatible & TIA-1083 compliant | Amplifies incoming sound up to 50+dB & outgoing speech up to 15 dB for others to hear better | DECT 6. 0 technology for interference-free communication | Includes 4 tone settings for a customized listening experience & 95dB extra-loud ringer with adjustable tones | Amplifies incoming sound up to 50+dB & outgoing speech up to 15 dB for others to hear better | DECT 6.0 technology for interference-free communication | Includes 4 tone settings for a customized listening experience & 95dB extra-loud ringer with adjustable tones