The Doro HandleEasy 330 GSM Cell Phone is a large button cell phone designed for use by seniors and individuals with low vision or fine motor disabilities. This phone works with major US GSM carriers like AT&T and T-Mobile (not Verizon or Sprint) and offers calling and text messaging with full SMS capability. Features include large backlit buttons, a color screen with large characters and high contrast, a vibrating ringer, and a headset. It also has 10-number redial with caller ID, eight ringer volume settings and 10 polyohonic ringtones, 100-number phonebook, mute, call timer, and automatic keylock. This phone is also equipped with a speakerphone, FM radio, clock, alarm, calculator, currency and measurment converter, and a flashlight. POWER: Uses a rechargeable lithium-ion battery for four hours of talk time and 130 hours of stand-by time. A charger is included and an optional car charger is available. OPTIONS: Carrying case. DIMENSIONS: The display is 1 x 1.4 inches. The phone is 4.1 x 2.3 x 0.6 inches. WEIGHT: 2.7 ounces.