Vibration alert tells you when a call is incoming so you can answer quietly.-Voice-activated Dialing - So you can make a phone call when your hands are full.-600-entry phone book - Keeps your contact numbers where you need them.-Hands-free Speakerphone - Lets you talk while driving and eliminates the need to purchase a separate hands-free kit.-Embedded GPS chip - Allows access to E911 emergency location services where available.-Lithium-Ion Battery - Provides up to 5 hours talk time for reliable assurance the phone won't run out of power.-Military standard durability