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RedThunder K75 Wireless Membrane Keyboard & Mouse Combo,75% Side-Engraved Keycaps,Optical Gaming Mouse with 4800DPI,3 Modes(BT/2.4G/Wired),Dual System,RGB Backlit,Rechargeable Battery,Gradient Gray
RedThunder

RedThunder K75 Wireless Membrane Keyboard & Mouse Combo

Bottom line: The RedThunder K75 Wireless Membrane Keyboard & Mouse Combo: Three connection modes: BT 5.0, 2.4GHz, and wired via USB-C; main trade-off: membrane switches, not mechanical, so no swappable or clicky feel.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For keyboards, mice, headsets and other PC peripherals, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Three connection modes: BT 5.0, 2.4GHz, and wired via USB-C
  • ✓ 4000mAh keyboard battery plus 800mAh mouse battery, both rechargeable
  • ✓ CNC metal knob toggles volume and RGB brightness with a long press
  • ✓ 75% 80-key layout reclaims 25% of the desk space a full-size board eats
  • ✓ Mouse steps through 5 DPI levels from 800 to 4800 with color-coded prompts

Cons

  • ✗ Membrane switches, not mechanical, so no swappable or clicky feel
  • ✗ Keyboard and mouse share one USB receiver, so losing it kills both
  • ✗ Not compatible with PlayStation consoles
  • ✗ Side-engraved legends sit on the key face, not the top, hurting readability

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SpecPicks Verdict

SpecPicks scored RedThunder K75 Wireless Membrane Keyboard & Mouse Combo using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming peripherals category. RedThunder's gaming peripherals lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming peripherals of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 【3 Connection Modes & Dual System Compatibility】Support BT5.0/2.4G/Wired three connection modes, 10m unobstructed stable wireless transmission; one-key switch between Windows/macOS via Fn+A/S (blue/yellow backlight flash for confirmation). Seamlessly switch among Bluetooth (FN+1!/2@/3#), 2.4G wireless (FN+4$), and wired mode (FN+5%) with FN shortcuts. Use the original charging cable to charge and type simultaneously in wired mode. Note: The keyboard and mouse share a single USB receiver, which is located at the bottom of the keyboard or mouse. Not compatible with PlayStation.
  • 【75% Compact Layout & Side-Engraved Character Design】80-key side-engraved keyboard with 1 multi-function CNC knob saves 25% desktop space vs full-size keyboard; side-engraved characters wear-resistant and non-fading, clear visual effect even in dark gaming environment. Equipped with a premium CNC metal knob—long press FN + Knob for 3s to switch between volume and lighting modes, rotate to adjust volume/backlight brightness, press to mute or cycle RGB lighting effects. The membrane key is quiet and comfortable, providing good tactile feedback.
  • 【Rechargeable Wireless Keyboard and Mouse】4000mAh high-capacity keyboard battery (5-6h charging time) + 800mAh mouse battery (1-2h charging time); keyboard auto-standby in 2min/sleep in 15min, mouse auto-standby in 1min/sleep in 15min, low power consumption design. Red slow flash of keyboard connection light & mouse delay/light off prompt low battery. Please use original Type-C cable to charge via computer USB for 8 hours before using.
  • 【Light Up Keyboard and Mouse】The K75 gaming keyboard can adjust RGB backlighting through multiple shortcuts (brightness/speed/effects optional), and FN + ESC restores factory settings. The gaming mouse with 13 RGB light effects (bottom RGB button switch), DPI button for 3s long press to turn light on/off, cool visual experience.
  • 【High-Precision Optical Mouse & 5-Level Adjustable DPI】M75 optical sensor mouse with 7 functional buttons, 5-level DPI (800-1000(default)-1600-2400-4800) with color-coded light prompt (Red/Blue/Green/Purple/White); sensitive optical tracking ensures smooth, lag-free movement for gaming/office, accurate positioning without frame drop.

Full Specifications

BrandRedThunder
ColorGray Gradient
Weight2.4g
Unit Count1 Count
ConnectivityBluetooth, USB, 2.4GHz
Model NumberK75
Power SourceBattery Powered
CompatibilitySwitch, Mac
Connection TypeWired
Keyboard LayoutQWERTY
Special FeatureBacklit, Ergonomic, Rechargeable, Volume Roller
Antenna LocationDaily use
Compatible DevicesGaming Console, Laptop
Movement DetectionOptical
Number of Batteries1 Lithium Ion batteries required. (included)
Keyboard DescriptionGaming
Warranty Description1 Year
Connectivity Technology2.4G Wireless Mode, BT Mode, Usb
Keyboard Backlighting Color SupportRGB
Other Special Features of the ProductBacklit, Ergonomic, Rechargeable, Volume Roller
Full listing titleRedThunder K75 Wireless Membrane Keyboard & Mouse Combo,75% Side-Engraved Keycaps,Optical Gaming Mouse with 4800DPI,3 Modes(BT/2.4G/Wired),Dual System,RGB Backlit,Rechargeable Battery,Gradient Gray

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RedThunder K75 Wireless Membrane Keyboard & Mouse Combo,75% Side-Engraved Keycaps,Optical Gaming Mouse with 4800DPI,3 Modes(BT/2.4G/Wired),Dual System,RGB Backlit,Rechargeable Battery,Gradient Gray is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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RedThunder K75 Wireless Membrane Keyboard & Mouse Combo,75% Side-Engraved Keycaps,Optical Gaming Mouse with 4800DPI,3 Modes(BT/2.4G/Wired),Dual System,RGB Backlit,Rechargeable Battery,Gradient Gray
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