Number of nozzles/tools
The total number of attachments or tools included in the kit.
Nozzles are referred to when it comes to an electric model, tools are indicated for instrument sets (see "Type"). In both cases, the more
diverse the equipment, the more extensive the possibilities of the manicure set, the more advanced it is considered. On the other hand, this indicator significantly affects the dimensions, weight and cost, and the real need for a variety of nozzles / tools does not always arise. Therefore, when choosing, you should take into account the features of using the device: it hardly makes sense to purchase a professional set of a couple of dozen tools if you just need to keep your nails in order while traveling.
Note that in sets that include double-sided devices (for example, with a scraper on one side and a cuticle spatula on the other), each side of such a device is considered a separate tool (as it has its own application).
Maximum operating time
The longest time that a self-powered electric kit (see "Type") (see above) can operate without changing batteries or recharging the battery. The higher this indicator, the more convenient the device will be in operation, the less often you will have to be distracted by its maintenance. At the same time, note that in the characteristics, the operating time is given, usually, for perfect conditions: with a minimum load on the nozzle (or even at idle), using high-quality batteries, etc. The actual time of continuous operation is highly dependent on the characteristics of the mode of use and can be noticeably less than the claimed one.
Backlight
The presence of a
lighting system in the design of an electrical device (see "Type"). Such a system provides additional illumination at the treatment site, which allows successful procedures to be carried out regardless of the presence of sufficiently bright external lighting. Just keep in mind that the backlight also requires electricity; this is not a problem when using mains power, however, when using a battery/accumulator, it can significantly reduce battery life.
Dimensions (set)
General dimensions of the set when folded. Since most models are equipped with covers or cases (see above), in fact, the dimensions of the case / case are usually indicated at this point — tools and attachments placed inside usually do not protrude outward.
Pay attention to these data if you plan to often carry the kit with you or take it on trips.
