Feker JJK21 vs Weikav Stars21 Programmable NumpadKnob or Aluminum
Choose the Feker JJK21 for its media-control knob, sound-dampening foam and 1500mAh battery, or the Weikav Stars21 for its aluminum case, QMK/VIA support and stated 1000Hz wired and 2.4GHz polling rate.
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2.8 (10)2.8 · 10 reviews
from$39at WhatGeek
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![[In Stock] Stars21 Programmable Mechanical Numpad](https://cdn.shopify.com/s/files/1/0549/0262/0278/files/0000_ec55349a-00a4-4b82-8d05-760c94529d10.jpg?v=1735897191&width=3840&quality=75)
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Which one should you get?
Get the
Feker JJK21
Battery
Build quality in the top 25% of Numpad boards under $50.
- Media-control knob for adjusting audio or other controls.
- 1500mAh battery and 300g listed weight.
- Vendor-described silicone foam for sound absorption.
Get the
Weikav Stars21 Programmable Numpad
QMK
Build quality in the top 10% of Numpad boards under $100.
- Aluminum case with an anodized gold weight listed in the vendor specifications.
- QMK and VIA support for customization.
- 1000Hz polling rate specified for wired and 2.4GHz connections.
Get the Feker JJK21 for its media-control knob, sound-dampening foam, larger 1500mAh battery and lower 300g weight. Choose the Weikav Stars21 if its aluminum case, QMK and VIA support, or stated 1000Hz wired and 2.4GHz polling rate matter more.
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.
Feker JJK21
Weikav Stars21 Programmable Numpad
Battery
1,500 mAh
800 mAh
A larger battery means fewer cables during the day
Case material
Plastic
Aluminum
Knob
Yes
No
Weight
300 g
480 g
Heavier boards stay planted and lighter ones travel
QMK
No
Yes
The deep option when you want to remap every key
- Feker JJK21
- Weikav Stars21 Programmable Numpad
- Performance
- 7675
- Build quality
- 7484
- Productivity
- 7456
- Customizability
- 8089
- Portability
- 8677
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Mount style: Gasket Mount
What will you mostly use it for?
The Stars21 has the clearer case for gaming when a stated polling rate matters, and for programming or modding when QMK and VIA support are priorities. The JJK21 is the more convenient fit for media controls and lighter carry, with its knob, lower listed weight and larger battery. For other desk tasks, the choice largely depends on whether you prefer the JJK21's control and sound-dampening features or the Stars21's aluminum construction.
Pick the Weikav Stars21 Programmable Numpad
- The Stars21 lists a 1000Hz polling rate for wired and 2.4GHz use.
- The JJK21's listing does not specify a polling rate, so there is less stated performance detail to compare.
Feker JJK21 vs Weikav Stars21 Programmable Numpad specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 22 specs differ
Feker JJK21
Weikav Stars21 Programmable Numpad
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
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Released
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Feker JJK21 vs Weikav Stars21 Programmable Numpad: your questions
The JJK21 adds a media-control knob, sound-dampening foam and a 1500mAh battery. The Stars21 has an aluminum case, QMK and VIA support, and a stated 1000Hz polling rate for wired and 2.4GHz connections.
Yes, the JJK21 has a knob, which its vendor describes as convenient for media control. The Stars21's listed extra features do not include a knob.
Yes, the Stars21 product description lists both QMK and VIA support. The JJK21 vendor describes supportive software, and customer feedback refers to Feker software rather than VIA.
The Feker JJK21 has a 1500mAh battery. The Weikav Stars21 has an 800mAh battery.
The JJK21 is listed at 300g, while the Stars21 is listed at 480g. The JJK21 is therefore the lighter of these two numpads by their listed weights.
Yes, the Stars21's case material is listed as aluminum, and its vendor description specifies CNC aluminum. The JJK21's listed case material is plastic.
The Stars21 is listed at 1000Hz over wired and 2.4GHz connections. Its vendor description specifies 125Hz over Bluetooth.
Yes, sound dampening is listed as an extra feature, and the vendor describes included silicone foam for absorbing typing sound. The vendor also describes a gasket mount and a PC mounting plate.
Both product listings specify hot-swappable PCBs. The JJK21 vendor says its sockets support 3-pin and 5-pin switches.
The Stars21 is the more directly documented choice for firmware customization because it supports QMK and VIA. The JJK21 vendor describes supportive software, and customer feedback identifies it as Feker software.
Both listings specify Bluetooth and 2.4GHz wireless, as well as wired connectivity. The JJK21 vendor identifies its wired connection as Type-C.
The Stars21 metadata lists a linear switch type. The JJK21 metadata does not specify a switch type.
Not sold on either?
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