Eliminating the unnecessary, complicated features of typical cell phones, this is the easiest amplified cell phone to use because it has four oversized buttons that place and answer calls. The up and down buttons select a number to dial, and the green button answers and places calls; the red hangs up the phone. It uses linear amplification to make voices and incoming call rings 20 decibels louder. An emergency button on the phone's rear automatically alerts up to five numbers (either by a call or SMS message); up to 200 phone numbers can be entered into the phone's memory. The phone's face slides up to reveal standard telephone buttons when direct dialing is desired. It uses a flashing orange LED, five volume settings, and a vibration setting to signal incoming calls; hearing-aid compatible. The bright 2 3/4" monochrome display is backlit in orange and uses easy-to-read numbers. The phone works with any GSM cell phone system including T-Mobile or AT&T--simply insert an appropriate SIM card for your preferred service provider. Its Li-Ion battery provides up to 180 minutes of talk time from a four-hour charge using the included AC adapter. 4 1/2" L x 2 1/4" W x 1" D. (5 1/2 oz.)