GravaStar Mercury K1 vs NPK Club RO75 Pro
Get the GravaStar Mercury K1 for the 8,000 mAh battery. Get the NPK Club RO75 Pro for hall effect and qmk.
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![[In Stock] RO75 pro 75% Pre-Built Aluminum Mechanical Keyboard](https://cdn.shopify.com/s/files/1/0549/0262/0278/files/4_872d9b56-26d2-48d7-96d8-c8b1e42ab938.jpg?v=1766117507&width=3840&quality=75)
Which one should you get?
Get the
GravaStar Mercury K1
Battery
Build quality in the top 50% of 75% boards under $150.
Get the
NPK Club RO75 Pro
Hall effect
Build quality in the top 15% of 75% boards under $150.
- Magnetic switches only. Standard MX switches will not fit.
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.
GravaStar Mercury K1
NPK Club RO75 Pro
Hall effect (magnetic)
No
Yes
Adjustable actuation helps in games and not in normal typing
Battery
8,000 mAh
6,000 mAh
A larger battery means fewer cables during the day
Switch options
Linear
Magnetic
Weight
1,080 g
1,680 g
Heavier boards stay planted and lighter ones travel
QMK
No
Yes
The deep option when you want to remap every key
- GravaStar Mercury K1
- NPK Club RO75 Pro
- Performance
- 6585
- Build quality
- 6781
- Productivity
- 6789
- Customizability
- 6386
- Portability
- 9292
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Case material: Aluminum
- Mount style: Gasket Mount
GravaStar Mercury K1 vs NPK Club RO75 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 25 specs differ
GravaStar Mercury K1
NPK Club RO75 Pro
Switch options
Hall effect (magnetic)
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
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Check price
Not sold on either?
![[In Stock] RO75 75% Pre-Built Aluminum Mechanical Keyboard](https://cdn.shopify.com/s/files/1/0549/0262/0278/files/RO75-2.477.jpg?v=1744771062&width=3840&quality=75)
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