SR100:- Super loud telephone ringer (95 decibels)- Adjustable ring volume- Adjustable ring tone control (250-1200Hz)- Dual modular phone jacks for easy connection to a standard analog telephone- Wake Assure:- Super-bright 1.8" LCD display and visual alarm indicator- Super loud 85+ decibel alarm- Included bed shaker will wake even deep sleepers- Includes port for optional lamp flasher accesory- Snooze button- Backup battery to ensure function even during a temporary power surge (batteries not included)- Security timer can turn lamp on and off while you are away from home- One year limited warranty- E713CC:- Amplifies incoming sound up to 35 decibels- Four tone settings to customize your listening experience- Amplified digital answering machine making it easier to listen to messages- Large high contrast CID display- Extra loud and clear speakerphone for hands-free conversations- Large keypad with high contrast numbers- Ten loud ringer melodies with six levels of volume- CID display lights up as super bright visual ringer- Expandable up to four cordless handsets (model # D703HS) One year limited warranty