Pre-installed soft
The navigation programme, originally installed in the navigator and sold with it, in other words, a set of maps available to the user “out of the box”.
Most modern navigators are equipped with such programs (although the name of pre-installed maps is not indicated for all models). Note that the functionality of complete programs in different models may vary. Most often, these are the simplest maps of the world or the region in which this device is sold. However, there are exceptions: there are models with detailed maps, programs with advanced functionality, etc. Such exceptions are especially common among high-end specialized devices, in particular marine and aviation (see "Scope"). And for some navigators, there may be several options for pre-installed programs and even the ability to select such programs at the request of the user. All these details should be specified in each case according to the manufacturer or seller.
It is also worth considering that the characteristics often indicate only the general name of the cards. At the same time, the same card can be available in several versions that differ in functionality and, sometimes, terms of use (paid / free). However, the main features are basic capabilities, interface device, etc. — usually, are common to all versions. Therefore, by the name of the complete programme, usually, one can quite accurately determine the general capabilities and features of the card's functionality.
CPU speed
Clock speed of the processor (CPU) installed in the navigator.
This parameter is often used to evaluate the overall level of the device and the power of its filling: it is believed that a higher frequency, in turn, provides greater computing power and better performance. However, the technical features of the processors are such that a high clock frequency does not always mean a more advanced chip. In addition, the processing power of the entire device depends not only on the CPU, but also on other components — from RAM to the operating system and installed software. So this information plays only a supporting role.
Battery life
The operating time of the navigator on one battery charge or a set of batteries depends on the power source (see above).
This parameter is more visual and closer to reality than technical information about the type of batteries, battery capacity, etc. However note that the operating time is usually indicated for a conditional perfect situation: a good signal level without the need to reconnect, low screen brightness ( or completely turned off the backlight), minimal use of wireless modules (Wi-Fi, Bluetooth), etc. Practical conditions inevitably differ from perfect — accordingly, the operating time may differ noticeably from the claimed one (usually in the direction of reduction, but sometimes vice versa) . Nevertheless, the operating time stated in the characteristics is quite reliable information, and it is quite possible to evaluate the capabilities of the selected device, as well as compare it with other models.
