I got myself the "Zero Limits" as a second mobile phone especially for the service and sports activities. It is easily accessible from the menu system and makes a good overall impression. Compared to other outdoor phones the luminosity of the LED is eg somewhat weaker than the B2100 from Samsung but is sufficient for the keyhole from. The voice quality is good, even in handsfree mode, but the tinny sound in speakerphone makes me only for a "good" rating when making calls. The Dualsim function is great and saves me from now on costs in foreign networks !! The battery life could be a little better, but corresponds to the manufacturer gift. Simple device with no frills - meets the requirements !!