Johdanto
The Actto CURVED Keyboard B603 is an elegantly designed keyboard engineered for comfortable typing. It features a unique curved shape and beautiful rounded keycaps, inspired by cobblestones. This model is a recipient of the prestigious Reddot 2023 Award, an international design award.
This mini-sized keyboard comes with a US layout (English arrangement) and offers versatile connectivity options, making it suitable for various devices and operating systems.

Figure 1: Actto CURVED Keyboard B603 Mini Size Black

Figure 2: Reddot 2023 Award-winning ergonomic curved design for natural finger movement.

Figure 3: The keyboard's slim profile and natural curve help suppress wrist extension for comfortable typing.
Tärkeimmät ominaisuudet
- Ergonominen kaareva muotoilu: Engineered for comfortable typing, following the natural trajectory of finger movement.
- Monitilayhteys: Offers three connection modes: Bluetooth 5.2, 2.4GHz wireless, and wired USB-C.
- Usean laitteen pariliitos: Capable of pairing with up to 5 devices, allowing seamless switching between them.
- Silent Pantograph Keys: Utilizes pantograph-type key switches for quiet keystrokes and a light key touch, ensuring stable input even when pressing the edge of the key.
- Ladattava akku: Built-in 300mAh lithium-ion battery, rechargeable via the included USB Type-C to USB Type-A cable. Provides approximately 90 hours of continuous operation after a 2-hour charge.
- Akun säästötoiminto: Automatically enters power-saving mode after approximately 10 minutes of inactivity.
- Laaja yhteensopivuus: Compatible with Windows, Mac iOS, and Android operating systems.

Figure 4: Pebble-shaped keycaps inspired by nature for a unique aesthetic.

Figure 5: The pantograph switch mechanism ensures silent, light, accurate, and smooth keystrokes.
Asennus
Yhteystilat
The keyboard supports three connection modes: Bluetooth, 2.4GHz wireless, and USB-C wired connection. You can easily switch between these modes using the hotkeys or the switch on the back of the keyboard.

Figure 6: Bluetooth 5.2 for stable wireless connection.

Figure 7: The 2.4GHz wireless dongle provides a reliable connection and is stored within the keyboard body.

Figure 8: For a direct and stable connection, use the included USB-C cable.
Pariliitos laitteiden kanssa
The keyboard can be paired with up to 5 devices (e.g., Windows PC, Mac, iOS tablet, Android phone) and allows for quick switching between them using dedicated hotkeys.

Figure 9: Connect and switch between up to 5 devices seamlessly.

Figure 10: Compatible with Windows, Mac iOS, and Android operating systems.
Toiminnassa
Näppäimistön lataaminen
The keyboard has a built-in rechargeable lithium-ion battery. To charge, connect the included USB Type-C to USB Type-A cable to the keyboard's USB-C port and a 5V/1A low-power charger. A full charge takes approximately 2 hours and provides about 90 hours of continuous use.
Important: Do not use high-power chargers such as 5V/2A to 9V/2A, as this may damage the keyboard.

Figure 11: Connect the USB-C cable to the keyboard for charging.
Akun säästötoiminto
To conserve battery life, the keyboard automatically enters a battery save mode if it remains inactive for approximately 10 minutes. To reactivate the keyboard from battery save mode, simply press any key. It will return to operating mode in about 0.5 seconds.
Pikanäppäimet
The keyboard includes 10 hotkeys for quick access to various functions, such as media control, volume adjustment, and device switching. Refer to the keycap legends for specific hotkey functions.

Figure 12: Hotkeys provide convenient access to common functions.
Huolto
To ensure the longevity and optimal performance of your keyboard, follow these simple maintenance guidelines:
- Puhdistus: Pyyhi näppäimistön pinta pehmeällä, kuivalla liinalla. Pinttyneeseen likaan pyyhi kevyestiampKostuta liina vedellä tai miedolla puhdistusliuoksella. Vältä voimakkaiden kemikaalien tai hankaavien materiaalien käyttöä.
- Pölynpoisto: Poista pöly ja roskat näppäinten välistä paineilmalla.
- Varastointi: Kun näppäimistöä ei käytetä pitkään aikaan, säilytä sitä viileässä, kuivassa paikassa, poissa suorasta auringonvalosta ja äärimmäisistä lämpötiloista.
- Nesteen roiskeet: In case of a liquid spill, immediately disconnect the keyboard from power and wipe it dry. Allow it to air dry completely before reconnecting.
Vianetsintä
If Keys Do Not Input as Engraved (Layout Mismatch)
If your computer is treating the keyboard as a Japanese layout instead of the US layout, you will need to adjust your computer's settings. Follow the instructions below for your specific operating system:
Windows 10:lle:
- From the bottom left of the screen, click the Start button (Windows mark), then click Settings (gear icon), then click Time & Language.
- On the left side, click Language. On the right side, select English for Windows display language.
- Under Preferred languages, select Japanese, then click Options.
- On the Hardware keyboard layout page, click Change layout.
- A new window will pop up. Select US keyboard (101/102 key) and click Restart now.
Windows 11:lle:
- From the bottom left of the screen, click the Start button (Windows mark), then click Settings (gear icon), then click Time & Language.
- On the left side, click Language & region.
- Under Language, select Japanese, then click the three dots (...) and click Language options.
- Under Keyboards, click Change layout.
- A new window will pop up. Select US keyboard (101/102 key) and click Restart now.
Macille:
- Siirry kohtaan Järjestelmäasetukset > Näppäimistö > Näppäimistötyyppi.
- When the keyboard assistant starts, click Continue on the bottom right.
- Follow the instructions on the screen and press the 'Z' key.
- Select ANSI (US keyboard) and click Done.
Androidille:
Settings > System > Languages & input > Physical keyboard > 101/104 English keyboard.
※ Settings may vary depending on your device. Please refer to your device's instruction manual for details. If you are using an Android device with a Japanese layout, you may need to install a third-party keyboard app to use the US layout.
Tekniset tiedot

Figure 13: The B603 is the Mini Size model, weighing 480g with dimensions of 297x127x22mm.

Figure 14: Detailed product specifications for the Actto CURVED Keyboard.
| Ominaisuus | Detail (Mini Size B603) |
|---|---|
| Mallin nimi | B603(BLACK) |
| Rungon koko | 297 × 127 × 22 mm |
| Paino | 480 g |
| Avainten määrä | 84 avainta |
| Pikanäppäimet | 10 avainta |
| Avaimen asettelu | Yhdysvaltain asettelu |
| Avaimen rakenne | Pantograph Type |
| Näppäimen painallus | 1.5 mm |
| Yhteysmenetelmä | Bluetooth / 2.4GHz Wireless / USB-C Wired |
| Bluetooth-versio | Bluetooth 5.2 |
| Yhteensopiva käyttöjärjestelmä | Windows, Mac, iOS, Android |
| Akku | Lithium-ion 300mAh Rechargeable |
| Yhteensopiva laturi | 5V/1A Low-power charger |
| Värityyppi | Black, White, Ivory, Pink |
| Materiaali | ABS-hartsi |
| Mukana olevat komponentit | Keyboard body, USB receiver (stored in main unit), USB cable, Instruction manual |
Takuu ja tuki
Takuuaika
Tämän tuotteen mukana tulee a 6 kuukauden takuu ostopäivästä lukien. Säilytä ostokuitti takuuvaatimuksia varten.
Asiakastuki
For any inquiries, technical assistance, or warranty claims, please refer to the contact information provided with your purchase or on the official Actto website. Ensure you have your product model number (B603) and purchase details ready when contacting support.





