ProtoArc XK04 Foldable Bluetooth Keyboard, Gray, PU Leather Cover, 3-Device Switching

For phone and tablet users who want a physical keyboard for typing away from a desk, the ProtoArc XK04 folds into a compact shape for travel and mobile work.

Its Bluetooth connection can stay linked to up to three devices, with dedicated keys for switching between them. Move from a phone to a tablet without re-pairing each time.

A built-in PU leather cover protects the folded keyboard from scratches in a bag or briefcase, while the included phone stand helps create a convenient setup for messaging, notes, and other on-the-go typing.

Technical details

• Name: ProtoArc XK04
• Type: Foldable wireless keyboard
• Layout: QWERTY
• Connectivity: Bluetooth 5.1, connects to up to three devices
• Unfolded dimensions: 10.76 x 4.07 inches
• Weight: 7.8 oz
• Material: ABS and PU leather
• Color: Gray
• Power: Rechargeable by USB-C
• Compatibility: Phones, tablets, and laptops

The two-fold design gives you a portable keyboard for typing on a phone or tablet, while its compact layout is suited to limited work surfaces such as an airplane tray or café table. At 0.55 inches, the keycaps provide physical keys in a travel-friendly format. A Bluetooth range of up to 33 feet gives you flexibility in where you place a connected device.

Tips for day-to-day use

Turn on the keyboard before pairing it with a device. Once connected, use the dedicated switching keys to move among up to three linked devices. For a mobile work session, place your phone in the included stand and use the keyboard for messages or notes, unfold it on a small table when you need more room to type.

The rechargeable battery uses the included USB-C cable. Auto-sleep standby is listed at up to 150 days, helping the keyboard stay ready between uses. Customer feedback often highlights its compact, foldable form, multi-device connection, and typing feel. Buyers also appreciate that the keys remain usable in a small design, making it a practical alternative to carrying a full-size keyboard for travel.

In the box

The package includes the foldable wireless keyboard, phone stand, USB cable, and user manual. The integrated PU leather cover folds around the keyboard, so there is no need to pack a separate protective cover for everyday carry.

Questions before you buy

Can I switch between my phone and tablet? Yes. The keyboard can connect to up to three devices at once, and dedicated keys let you switch between them without pairing again. It is designed for use with phones and tablets, and laptops are also listed as compatible devices.

Can I use it on a small surface? Its compact layout is intended for mobile typing and tight workspaces, including airplane trays and café tables. When unfolded, it measures 10.76 x 4.07 inches.

What cable does it use for charging? The keyboard is rechargeable through USB-C, and a USB cable is included in the package.

Should you buy it?

Choose the XK04 if you want a foldable keyboard for phone or tablet typing that is easy to carry and can serve several connected devices. Its integrated protective cover, included phone stand, and dedicated Bluetooth switching make it especially useful for travel, messaging, and taking notes away from a full desk.