The Zenia 300 is easy to use and has all the usual utilities. The thing that attracted me to the unit was the 16 hr talk time and the 60 mins answer machine. Both of which are as stated. I use the phone for up to ten hours a day and it has kept going unlike the phone it replaced. The surprise was the base station. That may be the best speaker phone I have had. I can wander away from it and my clients can still hear me