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Comparison Philips OneBlade QP2721 vs Philips OneBlade QP2520

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Philips OneBlade QP2721
Philips OneBlade QP2520
Philips OneBlade QP2721Philips OneBlade QP2520
from $55.50 
Expecting restock
from $72.87 
Expecting restock
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Some stores may stock the same trimmer model with different accessories. On the market there can be both the cheapest options, and options with a case or nozzles.
Typeshaving trimmershaving trimmer
Shavingwet and drywet and dry
Waterproof++
Nozzles
trimmer
universal comb
trimmer
 
Fixed combs3 pcs
Specs
Shaving heads / foil1 pcs1 pcs
Replacement nozzle modelQP210, QP220, QP610, QP620
Features
movable head / foil
possibility of water rinsing
movable head / foil
possibility of water rinsing
Power source
Power supplybatterybattery
Battery typeNi-Mh
Operating time45 min45 min
Charging time8 h8 h
Voltage switchingautomaticautomatic
Color
Added to E-Catalogmay 2023january 2017

Nozzles

Built-in trimmer. Device for trimming the contours of facial hair. A trimmer is similar to a clipper, but smaller and better suited for fine work. Located directly on the body of the device.

Blade for hair cutting. Removable version of the trimmer (read more about the trimmer above), made in the form of a replaceable nozzle and is installed instead of the main nozzle with shaving heads. Thanks to this, the trimmer can be made wider than the built-in trimmer, and overall more efficient.

Nozzle for ears and nose. The cylindrical nozzle of small diameter allows you to penetrate the inlet and ear and remove unwanted vegetation from there. It is installed mainly on top of the main nozzle.

Universal comb. Such a nozzle can be useful for regular care of the stubble or beard, when you need to trim, shorten, and not just shave. Length adjustment allows you to select the desired value for a particular area or depending on the image and type of "hairstyle".

Fixed combs

The number of fixed combs with different cutting heights included with the shaver. The possibilities of an electric shaver in the field of modeling and styling a beard with a mustache directly depend on this. Advanced electric shavers usually use from 3 to 5-7 combs, while low-cost models may have only one.

Replacement nozzle model

Model of replacement head(s) compatible with electric shaver. This data will be useful primarily when looking for spare nozzles.

Battery type

— Li-Ion. Currently, the prevailing battery type is Lithium-ion (Li-Ion), known for its high energy density, compact size, and light weight. Li-Ion batteries offer approximately 400 charge-discharge cycles on average. These batteries exhibit minimal self-discharge and lack a significant "memory effect" (capacity reduction due to charging a partially drained battery). However, they are sensitive to cold temperatures and require high-quality charging currents.

— Li-pol. Lithium-polymer (Li-Pol) batteries maintain stable output voltage even during significant discharge. These batteries offer an average lifespan of about 800 charge-discharge cycles. Unlike some battery types, Li-Pol batteries don't exhibit a memory effect, and they operate reliably within a wide temperature range of -20 to +40°C. However, they are sensitive to deep discharge and overcharging. To address this, specialized chargers employing suitable power supply algorithms for the lithium polymer context are recommended for maintenance.

— Ni-Mh. Nickel-metal hydride (Ni-MH) batteries excel in managing substantial charge and discharge currents, making them suitable for power-demanding electric motors and rapid charging. These batteries now boast impressive longevity, enduring around 1000 to 1500 charge-discharge cycles, while maintaining an eco-friendly nature. In comparison to Li-Ion, Ni-MH batteries appear bulkier and add weight to the device, yet they offer a more economical option.
Philips OneBlade QP2721 often compared
Philips OneBlade QP2520 often compared