Mouse Notes 05

Click Switches

Introduction

  • Switch = the tiny part under left + right click that tells the MCU 'a click happened'. TOP 6 part (#5).
  • You click THOUSANDS of times a day, so feel, speed and reliability all matter.
  • 2026 = the year MAGNETIC switches arrived in mice. One of the biggest changes to check before you buy.

1. The switch family tree

Metal contact Light beam Magnetic Mechanical SPDT Optical Hybrid Hall effect TMR Inductive
metal contact -> light beam -> magnetic: the three switch generations

2. Mechanical switch (the classic)

plunger (your finger pushes it) metal leaf spring ('shrapnel') metal contact (click = touch)
press -> leaf snaps -> metal contacts touch -> CLICK

Press -> leaf snaps -> metal contacts touch -> CLICK.

Problem: metal BOUNCES for a few ms after touching, like a ruler slapped on a desk vibrates.

Bounce vs clean signal:

mechanical <- debounce wait optical / magnetic <- clean, no bounce
the metal contact bounces for a few ms; light and magnetic sensing don't
  • Debounce: de + bounce = removing the bounce. A short wait (often ~5-15ms) where extra signals are ignored so 1 press = 1 click.
  • Double-click problem: contacts wear out -> bounce gets worse -> one press becomes TWO clicks.

    e.g. Chinese-made Omrons in older Logitech G Pro and G502 got famous for double-clicking.

3. SPDT (2 contacts)

top contact (resting) bottom contact (pressed) leaf jumps between the two
the mouse always knows which contact was touched last
  • How it helps: the mouse knows which contact was touched LAST (SR-Latch logic), so it can ignore bounce without a long debounce wait.

    e.g. G-Wolves Lycan / VUK: Huano SPDT + SR-Latch - G-Wolves claims ~30ms faster.

    e.g. Ninjutso Sora V3: SPDT HyperSwitch, marketed as won't double-click.

    e.g. Endgame Gear Kailh GX: top and bottom contacts, 'GX Speed Mode' or 'GX Safe Mode'.

4. Optical switch

infrared light beam click = beam gets blocked no metal touching -> no bounce
break the beam, register the click - nothing touches
  • Pros: no debounce, no bounce double-clicks, long life (often rated up to ~100M clicks).
  • Cons: early ones felt mushy - modern ones mostly closed the gap.

    e.g. Razer made in-house optical switches after the double-click drama - first in the Razer Viper. Gen-1 felt mushy, Gen-3 in the Basilisk V3 Pro (claims 90M clicks), now Gen-4 in the Viper V4 Pro.

Razer's own optical switches, generation by generation:

  1. Gen-4 - now, in the Viper V4 Pro
  2. Gen-3 - in the Basilisk V3 Pro, claims 90M clicks
  3. Gen-1 - first Razer Viper, felt mushy
  • Hybrid: optical detection + a real mechanical leaf for the crisp click.

    e.g. Logitech LIGHTFORCE (LIGHT = optical, FORCE = mechanical feel) - first in the G502 X, also the G309.

5. MAGNETIC switches (the 2026 wave)

Magnetic tech already fixed drifting controller sticks (Hall effect) and made keyboards faster (rapid trigger). In 2026 it reached mice.

The 3 magnetic types:

N S chip Hall effect TMR 2 magnetic layers + thin wall Inductive coil senses metal part
three ways mice now sense a click without metal touching
  • Hall effect (HE): named after scientist Edwin Hall (1879): a magnetic field creates a tiny measurable voltage. A magnet moves with the button, the sensor measures how close it is.
  • TMR: Tunnel MagnetoResistance: electrons 'tunnel' through an ultra-thin wall between 2 magnetic layers; how easily they pass changes with the magnet. Commonly described as more sensitive and lower power than Hall.
  • Inductive: from electromagnetic induction: a coil's field changes as a metal part gets closer -> measures press depth.

What magnetic unlocks:

light setting: click fires early (fast) deep setting: must press further (safer) rapid trigger: lift a little = ready again
button depth, and how rapid trigger resets before a full release
  • Adjustable actuation: YOU choose how deep the press must go to count.
  • Rapid Trigger: the button 'rapidly' resets - a new click registers as soon as your finger starts lifting.
  • No wear double-clicks: no metal contact = no bounce = no contact-wear double-clicking.

Magnetic mice (real examples):

  • Logitech G Pro X2 Superstrike: released 10 February 2026 - the one that started the wave. HITS = Haptic Inductive Trigger System: tiny haptic motors + inductive sensors replace the microswitch. Actuation adjustable in 10 levels. Silent buttons.

    Independent tests show: 8-9% faster in pure reaction tests, ~20% more clicks/sec with rapid trigger when butterfly/jitter clicking.

    (caveat: the 30ms advantage needs the LOWEST actuation setting - you'll need to unlearn resting tension on your fingers)

    (turned off, the buttons feel like almost nothing - 'like a broken mouse')

    India price: ₹23,995.

  • Finalmouse Starlight X: 38g, TMR sensing for rapid trigger + adjustable actuation, but the click feel itself is not adjustable. Custom F1 sensor (with PixArt) + Nordic nRF54LM20.
  • Keychron MagOptic: MagOptic = Magnetic + Optical. Real mechanical leaf click, detection by optical OR magnetic mode. Fixes the 'no real click' complaint about the Superstrike.
  • G-Wolves HTS Plus Pro: TMR magnetic main switches.
  • Coming next: RAWM Leviathan V4 GT (hybrid optical-magnetic), an Everglide magnetic mouse, a leaked Logitech X3 Superstrike (+50% battery reported).

6. Who makes switches?

  • Omron (Japan): the classic, historically in a big share of mice. D2FC-F-7N (20M) + D2FC-F-K (50M, 'Blue Dot' - known for double-clicking in some Logitech and Razer mice). Japanese vs Chinese-made can feel and last differently.
  • Kailh (China): many types: GM 8.0, GX (with Endgame Gear), GM Red Dot (60M, 24K gold-plated contacts), optical and magnetic variants.
  • Huano (China, since 1987): firm, tactile click. Supplies HP, Lenovo, ASUS, MSI. Blue Shell Pink Dot, Huano 50M, Huano SPDT (G-Wolves).
  • TTC (China): modder favourite. TTC Gold (light), TTC Silver (~52gf).
  • Razer (in-house): own optical switches, not sold separately.
  • Logitech (in-house): LIGHTFORCE hybrid + HITS inductive.
  • Keychron: MagOptic hybrid optical + Hall (Keychron G6 HE).
  • Others: Zippy, Honeywell, ZF/Cherry appear in switch comparison sheets.

!! Community claim: Chinese Omron '-K' switches fare better than older ones but can still fail after about a year of heavy use.

7. The big comparison

  • Mechanical: real click - yes · debounce - yes · double-click risk - higher · adjustable actuation - no · rapid trigger - no
  • SPDT: real click - yes · debounce - very short · double-click risk - low · adjustable actuation - no · rapid trigger - no
  • Optical: real click - yes* · debounce - no · double-click risk - very low · adjustable actuation - no · rapid trigger - no
  • Hybrid: real click - yes · debounce - no · double-click risk - very low · adjustable actuation - no · rapid trigger - no
  • Magnetic: real click - leaf or haptic · debounce - no · double-click risk - very low · adjustable actuation - YES · rapid trigger - YES

(* early optical felt mushier. 'Hybrid' = LIGHTFORCE-style. Magnetic features depend on the mouse.)

8. Click latency - keep it honest

mechanical ~5-15ms debounce optical ~0.2ms human reaction ~200-250ms (way bigger!)
switch speed barely matters next to your own reaction time

-> switch speed helps, but your own reaction time is MUCH bigger. Keep this in mind before you buy - a switch's raw speed matters less than the marketing suggests.

9. It's not just the switch

  • Button tension system: how the shell button presses on the switch. This is why the SAME switch feels different in 2 mice.

    e.g. Logitech G502 HERO: metal spring tensioning + metal pivot hinges. Ninjutso HyperClick: tension system aimed at removing pre-travel.

  • Silent switches: quieter clicks for office / late-night use - softer feel.

10. Which switch for which player?

Butterfly / drag click → low-debounce mechanical Kailh GM 8.0, Huano Blue Shell Pink Dot
MOBA / RTS → light switches Japanese Omron, TTC Gold
Tactical shooters → firmer click Huano - harder to misclick
Semi-auto spam → magnetic + rapid trigger Superstrike-style

11. 'My mouse double-clicks - what now?'

  1. Test: run an online double-click test.
  2. Debounce: raise it in software.
  3. Warranty: claim if covered.
  4. Replace: hot-swap or solder.

Next mouse? Consider optical, hybrid, SPDT or magnetic switches.

12. Switch Dictionary (why it's called that)

  • Microswitch: a very small switch - what sits under every mouse button.
  • Leaf spring / 'shrapnel': the thin metal strip that snaps. Chinese spec sheets often translate it as 'shrapnel'.
  • SPDT: Single Pole Double Throw - one moving part (pole) that can touch two positions (throws). Like a railway track switch.
  • SR-Latch: Set-Reset latch - logic that remembers which contact was touched last.
  • Optical: from 'optics' = light. Infrared beam gets blocked.
  • LIGHTFORCE: Light (optical detection) + Force (mechanical feel).
  • Hall effect: named after Edwin Hall, 1879.
  • TMR: Tunnel MagnetoResistance.
  • HITS: Haptic Inductive Trigger System (Logitech).
  • Haptic: from the Greek word for TOUCH - the tiny vibration that fakes a click.
  • MagOptic: Magnetic + Optical (Keychron).
  • Actuation point: from 'actuate' = put into action. The depth where the click counts.
  • Rapid Trigger: the trigger resets rapidly.
  • Hysteresis: the gap between the press point and release point. Rapid trigger removes the fixed gap.
  • Debounce: de + bounce = removing the bounce.
  • 20M / 50M / 100M: rated lifespan in MILLIONS of clicks - a lab rating, not a promise.
  • gf: gram-force - pressing force. ~52gf = like 52 grams pushing down.
  • Blue / Pink / Red Dot: coloured dot marking the switch variant.
  • Gold-plated contacts: gold doesn't rust/oxidise, so contacts stay clean longer.
  • Hot-swap: change switches without soldering - like replacing a bulb, not rewiring the lamp.
  • Pre / post-travel: button movement before / after the click.

13. What to check before you buy

  1. run an online double-click test
  2. check the debounce setting in software (lower = faster, riskier on mechanical)
  3. check pre-travel and post-travel on BOTH buttons
  4. check for side-to-side button wobble
  5. ask the seller for the switch type and brand (or check the spec sheet)
  6. MAGNETIC: how many actuation levels? does rapid trigger feel natural?
  7. MAGNETIC: haptic strength and battery cost - does it feel like a real click?
  8. sound: loud / quiet / silent
Mouse Notes 05 - Mechanical, optical and the new magnetic click switches -... ← Back to blog

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