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BTXETUEL SayoDevice O3C OSU Keyboard Rapid Trigger Hall Switches Magnetic Linear Switches Keyboard with Knob and Screen,Copy Paste,Shotcut,Macro Hotswap Mini Keypad.… (Pink)
BTXETUEL

BTXETUEL SayoDevice O3C OSU Keyboard Rapid Trigger Hall Switches Magnetic Linear Switches Keyboard with Knob and Screen,Copy Paste,Shotcut,Macro Hotswap Mini Keypad.… (Pink)

Bottom line: The BTXETUEL SayoDevice O3C OSU Keyboard Rapid Trigger Hall Switches ($29.59 on Amazon as of 2026-10-07): 8000Hz USB 2.0 polling over Type-C for osu! and rhythm-game input timing; main trade-off: only 3 keys and a knob, so it supplements rather than replaces a full keyboard.

$29.59

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Buy on Amazon — $29.59 Compare to similar gaming peripherals

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For keyboards, mice, headsets and other PC peripherals, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 8000Hz USB 2.0 polling over Type-C for osu! and rhythm-game input timing
  • ✓ 3 Hall-effect magnetic linear switches with rapid trigger for fast repeat taps
  • ✓ 0.96-inch 160x80 IPS color screen shows live key range and press counts
  • ✓ Hot-swap socket accepts any Hall magnetic switch, calibrated with one click

Cons

  • ✗ Only 3 keys and a knob, so it supplements rather than replaces a full keyboard
  • ✗ Calibration required on first use and after every firmware upgrade
  • ✗ Hall switch compatibility limits swaps versus standard mechanical MX sockets
  • ✗ Screen customization is limited to the first text line, not full graphics

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SpecPicks Verdict

SpecPicks scored BTXETUEL SayoDevice O3C OSU Keyboard Rapid Trigger Hall Switches… using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming peripherals category. BTXETUEL's gaming peripherals lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming peripherals of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 【O3C OSU SayoDevice Keyboard】This keyboard with 3 Hall magnetic linear switches, 1 knob, 1 screen! TYPE-C,USB 2.0 high-speed 8000HZ.
  • 【Replaceable Switches】Supports any Hall magnetic Switches, with a simple click for calibration.
  • 【IPS color Screen】With 0.96 inch IPS color screen,160*80 Resolution, visible key range and button counting.
  • 【Custom Screen】The first line of text on the screen can be customized, such as writing your own ID.
  • 【Custom Knob】The knob can also be set with any key, such as to scroll through the song list.
  • 【NOTICE】Sometimes, the keyboard needs to do "CALIBRATION" ( The steps are shown in the figure ) before use for the first time or after firmware upgrade.

Full Specifications

BrandBTXETUEL
Colorpink
StyleGame
Model NameSayodevice-O3C
Style NameGame
Unit Count1 Count
Switch TypeLinear
ConnectivityUSB
Model NumberSayodevice-O3C
Power SourceUSB
Built-In MediaUSB Cable
Number of Keys3
Button Quantity3
Keyboard LayoutQWERTY
Mfr Part Number'Sayodevice-O3C'
Special FeatureMagnetic
Antenna LocationGaming
Hand OrientationAmbidextrous
Compatible DevicesLaptop, Mac, PC
Enclosure MaterialPlastic

Ready to buy?

BTXETUEL SayoDevice O3C OSU Keyboard Rapid Trigger Hall Switches Magnetic Linear Switches Keyboard with Knob and Screen,Copy Paste,Shotcut,Macro Hotswap Mini Keypad.… (Pink) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $29.59

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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BTXETUEL SayoDevice O3C OSU Keyboard Rapid Trigger Hall Switches Magnetic Linear Switches Keyboard with Knob and Screen,Copy Paste,Shotcut,Macro Hotswap Mini Keypad.… (Pink)
$29.59
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