8BitDo Retro18 Numpad vs Yunzii YZ21Calculator or RGB
Choose the Retro18 for its built-in calculator and display, or the YZ21 for RGB lighting, macros, and more switch choices.
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Which one should you get?
Get the
8BitDo Retro18 Numpad
Build quality in the top 45% of Numpad boards under $100.
- Combines a PC numpad with a standard calculator mode.
- Includes a 9-digit 7-segment display and a Windows Calculator shortcut button.
- Supports Bluetooth, 2.4 GHz, and wired Type-C connections.
Get the
Yunzii YZ21
Battery
Build quality in the bottom 40% of Numpad boards under $50.
- Offers Gateron G Pro Red, Blue, Yellow, Brown, and Black switch choices.
- Supports customizable RGB effects and macro settings according to the vendor.
- The vendor says its hot-swap sockets accept 3-pin and 5-pin switches without soldering.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Pick the 8BitDo Retro18 if the calculator mode, dedicated Windows Calculator shortcut, and visible display are the deciding features. Choose the Yunzii YZ21 if RGB effects, macro functions, or its broader selection of named switch options matter more. Before changing keycaps on the YZ21, account for its north-facing LEDs and the Cherry-profile interference rule.
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.
8BitDo Retro18 Numpad
Yunzii YZ21
Battery
1,000 mAh
1,500 mAh
A larger battery means fewer cables during the day
Display
Yes
None
A case display rather than a typing feature
Keycaps
ABS, PBT
PBT
Backlight
None
RGB, north-facing
RGB for looks and low light rather than speed
Mac & Windows
No
Yes
- 8BitDo Retro18 Numpad
- Yunzii YZ21
- Performance
- 5373
- Build quality
- 6953
- Productivity
- 4959
- Customizability
- 5069
- Portability
- 8385
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
What will you mostly use it for?
The Retro18 stands out when a calculator mode, display, and known compact dimensions matter. The YZ21 has the edge for users who want lighting, macros, or a choice among named switch types. Office work is a close call because the products offer different productivity features. Both are wireless-capable numpads with hot-swap support and N-key rollover.
Pick the Yunzii YZ21
- The YZ21 offers Gateron G Pro Red, Blue, Yellow, Brown, and Black switch choices.
- It has RGB lighting and N-key rollover, which the Retro18 also supports.
8BitDo Retro18 Numpad vs Yunzii YZ21 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
7 of 18 specs differ
8BitDo Retro18 Numpad
Yunzii YZ21
Switch options
Hot-swappable
Mount style
Layout size
Layout standard
Ergonomics
Display
Connection
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Mac & Windows
Released
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8BitDo Retro18 Numpad vs Yunzii YZ21: your questions
Yes, it switches between PC numpad mode and standard calculator mode. It also has a dedicated shortcut button for the Windows Calculator app.
No screen is listed for the YZ21. The Retro18 has a 9-digit 7-segment display for its calculator function.
The Yunzii YZ21 has RGB lighting, with the vendor describing customizable RGB effects. The Retro18 is listed without RGB.
Both list Bluetooth and 2.4 GHz wireless, as well as wired connectivity. The Retro18 vendor specifies Bluetooth 5.0 and wired Type-C.
The vendor lists Gateron G Pro Red, Blue, Yellow, Brown, and Black options. These cover named linear, clicky, and tactile choices in the product metadata.
Both models are listed as hot-swappable. The YZ21 vendor specifically says its sockets accept 3-pin and 5-pin switches without soldering.
The YZ21 has north-facing LEDs, and its compatibility rule warns that Cherry-profile keycaps can hit the switch housing. Check the keycap profile and clearance before installing them.
The YZ21 vendor describes shortcut keys and macro functions, with macro settings available through its software. The Retro18 listing instead highlights calculator modes and a Windows Calculator shortcut.
The Retro18 is listed at 300g and measures 46 x 104 x 170 mm. No weight or dimensions are listed for the YZ21.
The Retro18 lists a 1000mAh battery, while the YZ21 lists 1500mAh for its wireless version. These figures are capacities, not battery-life estimates.
Yes, both models list N-key rollover. The YZ21 vendor also describes full anti-ghosting.
Choose the Retro18 if its calculator mode, display, and Windows Calculator shortcut suit your workflow. The YZ21 is an alternative if shortcut keys, macros, and its stated Mac and Windows support are more useful.
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