Range
The range of the wireless connection provided in the mouse (see "Connection Type").
Almost all modern wireless models work confidently at a distance of at least 2 – 3 metres. So you need to pay attention to this parameter mainly when you plan to use the mouse at a greater distance from the computer — for example, when working with a projector at a presentation. At the same time, when evaluating the range, note that it is indicated for perfect conditions: the absence of interference and obstacles in the signal path, the full charge of the battery in the mouse, etc. In fact, the communication range may be somewhat less, so when choosing, it is worth taking a certain stock. Nevertheless, according to the claimed range, it is quite possible to evaluate the practical capabilities of different models and compare them with each other.
Battery life
Battery life of the mouse operating on replaceable power elements (see "Power") with one set of batteries.
The mentioned operating time is quite approximate: it is specified for an average usage mode. Actual battery life may be either less or more than stated, depending on the usage characteristics; moreover, the quality of the battery brand also greatly affects the operating time. Nevertheless, it is a fairly reliable indicator, which can be used to evaluate and compare different models: the difference in the stated operating time generally corresponds to the difference in actual battery life when using batteries of similar quality.
It is worth mentioning that modern battery-operated mice have fairly substantial battery life, measured in months; in the longest-lasting models, the stated operating time is about 36 months (or 3 years).
