Firstblood B81 vs Jamesdonkey R4
Get the Firstblood B81 for sound dampening. Get the Jamesdonkey R4 for the 4,000 mAh battery and qmk.
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from$149at WhatGeek
90-day lowLowest price in 90 days
Which one should you get?
Get the
Firstblood B81
Sound dampening
Build quality in the top 45% of 75% boards under $150.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Get the
Jamesdonkey R4
Battery
Build quality in the bottom 50% of 75% boards under $200.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
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.
Firstblood B81
Jamesdonkey R4
Battery
3,750 mAh
4,000 mAh
A larger battery means fewer cables during the day
Case material
Acrylic
Aluminum
Weight
1,500 g
1,900 g
Heavier boards stay planted and lighter ones travel
QMK
No
Yes
The deep option when you want to remap every key
Sound dampening
Yes
No
- Firstblood B81
- Jamesdonkey R4
- Performance
- 6854
- Build quality
- 7066
- Productivity
- 9163
- Customizability
- 7979
- Portability
- 8377
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Mount style: Gasket Mount
- Knob
Firstblood B81 vs Jamesdonkey R4 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
12 of 22 specs differ
Firstblood B81
Jamesdonkey R4
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
QMK
Mac & Windows
Released
Compare prices
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