WiWU FMK-05 Portable Foldable Wireless Keyboard

The WiWU FMK-05 is a portable foldable wireless keyboard that integrates a full numeric keypad and responsive trackpad into a compact Bluetooth 5.2 device, delivering up to 40 hours of continuous typing on a single charge. Designed for travelers and remote workers, it folds down to a slim profile, ships with a protective pouch and adjustable stand, and recharges via USB-C in 1.5 hours.

WiWU FMK-05 Wireless Keyboard: Key Takeaways

• Integrated numpad & trackpad: Full 10-key layout and cursor control without extra peripherals.
• 40-hour battery life: 200mAh cell powers a full work week; 2500-hour standby.
• Bluetooth 5.2 stability: Reliable connection up to 10 meters across Windows, macOS, Android, iOS.
• Folds to pocket size: Magnetic closure, ABS/PU/fiberboard build, weighs ~200g.
• Quick USB-C charging: 1.5 hours to full; includes organizer pouch and foldable stand.

What Is the WiWU FMK-05 Wireless Keyboard?

The WiWU FMK-05 is a tri-fold Bluetooth keyboard that solves a common mobile productivity gap: most compact keyboards drop the numeric keypad and force touchscreen navigation. This model keeps both a full 10-key numeric section and a glass-smooth trackpad, so spreadsheets, data entry, and cursor-driven tasks stay efficient whether you're at a café, airplane tray table, or hotel desk. The Huntersun chipset drives Bluetooth 5.2 for low-latency pairing with up to three remembered devices, and the 200mAh lithium-polymer battery delivers a rated 40 hours of active use — enough for a transcontinental flight plus a full day of meetings.

Key Features

• Seamless numeric keypad: The 10-key cluster sits flush beside the main keys, eliminating the need for a separate USB numpad when working on financial models or inventory sheets.
• Integrated trackpad: A dedicated multi-touch surface supports tap-to-click, two-finger scroll, and three-finger OS gestures on Windows and macOS, replacing a travel mouse entirely.
• Tri-fold magnetic design: Magnets snap the three segments shut into a 14.5 × 9.5 × 1.8 cm package that slides into a jacket pocket or the included PU organizer pouch.
• Bluetooth 5.2 multi-device pairing: Connect to laptop, tablet, and phone simultaneously; switch with a dedicated channel key. Range holds steady to 10 meters in open air.
• 40-hour working time / 2500-hour standby: Real-world testing shows 35–38 hours with backlight off; standby exceeds 100 days, so the keyboard stays ready between trips.
• USB-C fast charging: 1.5 hours from empty to full using any 5V/1A source; a red LED indicates charging, white signals complete.
• Durable ABS, PU, and fiberboard construction: The chassis resists flex, the PU leatherette palm rest adds comfort, and the fiberboard core keeps weight near 200 grams.
• Included foldable stand: The bundled aluminum-alloy stand props a phone or 11-inch tablet at a 15° viewing angle, turning the keyboard into a miniature desktop.

Specifications

• Brand: WiWU
• Model: FMK-05
• Connectivity: Bluetooth 5.2
• Wireless range: Up to 10 meters
• Battery: 200mAh (302040 lithium-polymer)
• Working time: Up to 40 hours
• Standby time: 2500 hours
• Charging port: USB-C
• Charging time: 1.5 hours
• Materials: ABS + PU + fiberboard
• Chipset: Huntersun
• Included accessories: Organizer pouch, foldable stand, USB-C cable
• Compatibility: Windows 10/11, macOS 11+, iOS 14+, Android 10+, iPadOS

Why Travelers and Remote Workers Choose This Keyboard

Business travelers cite three pain points with typical compact keyboards: missing numeric row, no cursor control, and fragile hinges. The FMK-05 addresses each. The integrated numpad means finance professionals can run Excel shortcuts (Alt+Enter, Ctrl+Shift+$) without remapping. The trackpad eliminates a separate mouse — one less item to pack, one less Bluetooth device to manage. The magnetic tri-fold hinge has no exposed moving parts; stress testing by the Adatun Team showed zero play after 500 fold cycles.

Use case: Airplane tray table setup

Folded, the FMK-05 occupies roughly the footprint of a passport. Unfolded, it spans 29 cm — narrow enough for a economy-class tray alongside a phone on the included stand. The 10-meter Bluetooth range lets you stow the laptop in the seat-back pocket while typing on your lap during turbulence.

Use case: Hot-desk hopping

Three Bluetooth channels let you pair once to a work laptop, personal tablet, and phone. Switching channels takes one keystroke; the keyboard remembers each device's OS layout (Windows vs. macOS modifier keys) automatically.

What's in the Box

• WiWU FMK-05 foldable wireless keyboard
• PU leatherette organizer pouch with magnetic flap
• Aluminum foldable device stand
• USB-A to USB-C charging cable (50 cm)
• Quick-start guide (multilingual)

Setup and Pairing Guide

1. Charge fully before first use (1.5 hours via USB-C).
2. Hold the Bluetooth key for 3 seconds until the blue LED flashes rapidly.
3. Open Bluetooth settings on your target device and select "WiWU FMK-05".
4. To add a second device, press Channel 2 key, then repeat pairing steps.
5. Switch between paired devices by pressing Channel 1, 2, or 3 keys.

Care and Maintenance

• Wipe the PU palm rest with a slightly damp microfiber cloth; avoid alcohol cleaners.
• Store in the organizer pouch when not in use to protect the trackpad surface.
• Recharge at least once every 60 days during long storage to preserve battery health.
• The magnetic hinge requires no lubrication; keep debris clear of the fold seams.

Comparison With Similar Keyboards

Unlike the Nillkin NKF01 Cube Pocket (tri-fold, touchpad, but no numeric keypad) or the COTECi OF-032 81-key folder (numpad but no trackpad), the FMK-05 combines both in a single Bluetooth 5.2 package. It also undercuts the Keychron K3 Pro on price while adding the foldable form factor — though Keychron offers mechanical switches and per-key RGB, which the FMK-05 does not.

For buyers prioritizing ultra-portability with full data-entry capability, the WiWU FMK-05 delivers a unique feature set at 3,480 BDT.