Per-Key Quality Testing

In order to test the quality and consistency of a keyboard, we are using a texture analyzer that is programmed to measure and display the actuation force of the standard keyboard keys. By measuring the actuation force of every key, the quality and consistency of the keyboard can be quantified. It can also reveal design issues, such as the larger keys being far softer to press than the main keys of the keyboard. The actuation force is measured in Centinewton (cN). Some companies use another figure, gram-force (gf). The conversion formula is 1 cN = 1.02 gf (i.e. they are about the same). A high-quality keyboard should be as consistent as possible, with an average actuation force as near to the manufacturer's specs as possible and a disparity of less than ±10%. Greater differences are likely to be perceptible by users. It is worth noting that there is typically variance among keyboards, although most keyboard companies will try and maintain consistency - as with other reviews, we're testing our sample only.

The machine we use for our testing is accurate enough to provide readings with a resolution of 0.1 cN. For wider keys (e.g. Enter, Space Bar, etc.), the measurement is taking place at the center of the key, right above the switch. Note that large keys generally have a lower actuation force even if the actuation point is at the dead center of the key. This is natural, as the size and weight of the keycap reduce the required actuation force. For this reason, we do display the force required to actuate every key but we only use the results of the typically sized keys for our consistency calculations. Still, very low figures on medium sized keys, such as the Shift and Enter keys reveal design issues and can easily be perceptible by the user.

Content’s Brown switches are, in terms of specifications, a copy of OUTEMU’s Brown switch. We expected them to perform equally as well but the Content switches seem to be significantly less consistent. The disparity is ±10.89% across the main keys, one of the worst consistency figures we recorded to this date. The average force at the actuation point is just 41.5 cN. The force at the actuation point  naturally should be lower than the switch’s maximum force at the travel tipping point, yet this reading is exceedingly low for Brown switches, meaning that either the switches actuate lower than the expected travel point or they are produced to be a little softer than they should actually be.

Hands-on Testing

I always try to use every keyboard that we review as my personal keyboard for at least a week. My typical weekly usage includes a lot of typing (about 50-100 pages), a few hours of gaming and some casual usage, such as internet browsing and messaging. I personally prefer Cherry MX Brown or similar (tactile) switches for such tasks, meaning that the Content Brown switches should theoretically be ideal for my desktop.

Just as expected, I found the Content Brown switches to be comfortable for long-term typing. Their tactile feedback is very subtle and could easily be confused for Red type switches, yet their satisfactory travel and little resistance makes them easy on the fingers and significantly reduces fatigue. The keys are stable, with minimal wobbling. My only complaint would be the significant force difference between the keys – having used a great number of keyboards to date, I could notice the difference between keys with my fingers while I was paying attention. Most people should be unable to even tell the difference but I believe that the force disparity is excessively high.

For gaming, the Velocifire VM02WS is comfortable for long-term gaming sessions, but I believe that it is a keyboard only suitable for single-player games or casual gaming. First and foremost, the VM02WS lacks any kind of advanced programming. Most gamers would definitely like at least basic programmability features, even if limited to basic remapping and application launching. The other issue is the input lag that is most likely caused by its wireless transmitter. That lag should not be noticeable with the naked eye for any person, except perhaps by very few people with highly sharpened senses. However, it was easy to notice it using a 240 FPS camera, where it could be clearly seen that the keycap was bottoming down before there was a response on the screen. Of course, the key-to-screen lag is not the lag of the keyboard alone, but never before we managed to clearly record a lag using this camera. Considering that a 240 FPS camera is not even considered fast today, the lag must be dozens (if not hundreds) of milliseconds to be this obvious. Although it should be unnoticeable for casual gaming and single player games, it is clearly unsuitable for competitive online gaming.

On the plus side, the battery life of the VM02WS is excellent for a wireless mechanical keyboard. With the backlighting turned off, the VM02WS lasted for four days of everyday use. Turning the backlighting on limits the battery life of the VM02WS to about 9-10 hours, enough for a long living room gaming session before it requires recharging. So Velocifire doesn't completely overcome the inherient disadvantage of a wireless mechanical keyboard – a fully electronic keyboard would find its battery life measured in months – but the VM02WS is delivering days of battery life in a field that often only delivers a dozen or so hours.

Introduction, Packaging & Bundle Final Words and Conclusion
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  • arashi - Wednesday, January 15, 2020 - link

    Might as well get a Keychron.
  • milkywayer - Wednesday, January 15, 2020 - link


    Does this one have a TKL version?

    I'm still looking for a wireless keyboard that fits my criteria :(

    Should be
    Good switches
    No nasty RGB or fint style
  • Dug - Wednesday, January 15, 2020 - link

    That's an impossible wish list :)
    You'll get it when manufacturers stop making rgb everything.
  • bigvlada - Thursday, January 16, 2020 - link

    Scour Ebay for IBM Model F, with bluetooth conversion kit installed.
  • CrazyUkrainian - Thursday, January 16, 2020 - link

    Keychron does have such a keyboard, no RGB and decent switches. But if you want, check out Azio Fokal on Indiegogo. They have already delivered 2 keyboards so they will deliver. Ships in April 2020
  • The_Assimilator - Thursday, January 16, 2020 - link

    It's also ridiculously expensive.
  • arashi - Friday, January 17, 2020 - link

    Keychron K2/K4? It's not technically TKL but it has all the buttons I want. K2 for home and K4 for the office.
  • Violet Giraffe - Sunday, January 19, 2020 - link

    What's nasty about RGB? And what do you care if it can always be turned off?
  • MayDayComputers - Wednesday, May 26, 2021 - link

    I know this is over a year later, but Velocifire make the TKL01 that meets your criteria. I’ve had my TKL01 for a few years. I just got a second hand VM02 for cheap and found this review.
    The TKL01 has actual Outemu brown switched that have a more noticeable tactile bump than the VM02.
  • jordanclock - Wednesday, January 15, 2020 - link

    "The heart of the Velocifire VM02WS is an 80M08 ZAA8073112, a chip that we could literally find nothing about. We could not identify its manufacturer, let alone its specifications."

    No kidding, if you Google for "80M08 processor" this article is the fourth result after chromatographs and coriolis flow meters.

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