Redragon EISA K686 Pro vs PENUMBRA K687 ProLayout vs Build
Choose the EISA K686 Pro for a full-featured layout, or the Penumbra K687 Pro for a premium aluminum build in a compact form.
KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Which one should you get?
Get the
Redragon EISA K686 Pro
Layout
- 98-key compact layout retains numpad and navigation cluster.
- Includes a keycap & switch puller and four spare switches in the box.
- Vendor description confirms dedicated Mac/Windows system toggle switch.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Get the
Redragon PENUMBRA K687 Pro
Build
Build quality in the top 35% of 75% boards under $100.
- CNC aluminum case offers a premium, tank-solid build quality.
- More compact 75% layout (81 keys) maximizes desk space.
- Features five-layer noise dampening with PO foam, IXPE foam, PET pad, socket foam, and silicone.
- No numpad.
Your primary need dictates the choice. If you require a numpad for data entry or prefer a more complete layout without layers, the Redragon EISA K686 Pro is the logical pick. If you prioritize a premium, dense typing feel, want to maximize mouse space, and prefer a compact keyboard with an aluminum chassis, the Redragon Penumbra K687 Pro is the better investment. Both are competent tri-mode boards with gasket mounts and hot-swap sockets.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Redragon EISA K686 Pro
Redragon PENUMBRA K687 Pro
Layout size
90%
75%
Case material
Plastic
Aluminum
Display
LED
None
A case display rather than a typing feature
Weight
1,200 g
1,800 g
Heavier boards stay planted and lighter ones travel
Backlight
RGB, south-facing
RGB
RGB for looks and low light rather than speed
- Redragon EISA K686 Pro
- Redragon PENUMBRA K687 Pro
- Performance
- 7879
- Build quality
- 6873
- Productivity
- 8370
- Customizability
- 7361
- Portability
- 5474
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Switch options: Linear
- Mount style: Gasket Mount
- Knob
- Sound dampening
What will you mostly use it for?
The EISA K686 Pro is the clear choice for office work and content creation where a numpad and dedicated keys are valuable. The Penumbra K687 Pro wins for gaming and travel, prioritizing mouse space and portability with its compact, aluminum design. For programming and modding, the decision is more nuanced, leaning on the EISA's included accessories and full layout versus the Penumbra's premium materials and smaller footprint.
Pick the Redragon PENUMBRA K687 Pro
- The Penumbra K687 Pro's 75% layout frees up more desk space for mouse movement.
- Its listing explicitly mentions N-Key Rollover for simultaneous key presses.
- The heavier aluminum build at 1800g provides more stability during intense use.
Redragon EISA K686 Pro vs PENUMBRA K687 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
7 of 22 specs differ
Redragon EISA K686 Pro
Redragon PENUMBRA K687 Pro
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
- Check on Amazon
Amazon
Check price
Redragon EISA K686 Pro vs PENUMBRA K687 Pro: your questions
The Redragon EISA K686 Pro has a 98-key layout that includes a numpad. The Penumbra K687 Pro uses a 75% layout with 81 keys and does not have a dedicated numpad.
Yes. The Redragon Penumbra K687 Pro features a case made from CNC aluminum, as stated in its product title and description. The EISA K686 Pro has a plastic case.
Yes. Both the Redragon EISA K686 Pro and Penumbra K687 Pro offer tri-mode connectivity, which includes Bluetooth, 2.4GHz wireless, and a wired USB-C connection.
Yes, both keyboards are hot-swappable. The EISA K686 Pro's description specifies its socket supports nearly all 3-pin and 5-pin switches.
The Penumbra K687 Pro is described as having five-layer noise dampening, including PO foam, IXPE switch foam, a PET sound pad, bottom socket foam, and a silicone pad. The EISA K686 Pro lists sound-absorbing pads, a 3.5mm PO pad, and two dampening foams.
According to its vendor page, the EISA K686 Pro package includes the keyboard, a detachable USB-C cable, a nano receiver, a keycap & switch puller, four spare switches, a sticker, and a user manual.
The listed package contents for the Penumbra K687 Pro do not include a switch or keycap puller. It includes the keyboard, four spare switches, a receiver, a USB-C cable, and a manual.
The metadata for the Redragon EISA K686 Pro specifies it has south-facing RGB LEDs. The Penumbra K687 Pro listing mentions RGB backlighting and side lighting but does not specify LED orientation.
The EISA K686 Pro explicitly lists Mac/Win support in its features, and its description mentions a side button for switching between systems. The Penumbra K687 Pro listing does not specifically mention Mac compatibility.
The Penumbra K687 Pro is significantly heavier at 1800 grams. The EISA K686 Pro weighs 1060 grams.
The EISA K686 Pro is a 90% size (98-key) keyboard, keeping the numpad and function row in a compact form. The Penumbra K687 Pro is a 75% size (81-key) keyboard, which removes the numpad and function row for a smaller footprint.
Not sold on either?
Still torn?
Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.