Shipping Information
- Available for shipping
- Usually leaves our partner warehouse in 3-5 business days
Store Availability
- 4-6 business days at Bankstown Store
- 4-6 business days at Castle Hill Store
- 3-5 business days at Northmead Store
Shipping Estimate
Keychron J4 QMK, 80%, Wired & Wireless, USB + RF Wireless + Bluetooth, Mechanical, Black
| Keyboard | |
| Keyboard key switch technology | Keychron Super Banana |
| Recommended usage What the product should be used for, and how it should be used (e.g. ambient temperature). | Universal |
| Connectivity technology The technology that enables connectivity of the device, e.g. wired or wireless. | Wired & Wireless |
| Device interface The ports (sockets) where the device connects with other devices. | USB + RF Wireless + Bluetooth |
| Keyboard key switch The characteristics of the key switch, mechanical vs rubber dome. A mechanical key switch is usually more expensive, gives a stronger feedback and can be more precise. | Mechanical |
| Pointing device |
 |
| Keyboard form factor Keyboard size, e.g. standard, mini. | 80% |
| Numeric keypad Small, palm-sized, seventeen key section of a computer keyboard, usually on the very far right. The numeric keypad features digits 0 to 9, addition (+), subtraction (-), multiplication (*) and division (/) symbols, a decimal point (.) and Num Lock and Enter keys. Laptop keyboards often do not have a numpad, but may provide numpad input by holding a modifier key (typically labelled "Fn") and operating keys on the standard keyboard. |
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| Keycaps | Double shot |
| Keycaps material | Polybutylene terephthalate (PBT) |
| Keyboard keys operating life | 50 million characters |
| Number of hot keys | 87 |
| Multimedia keys |
 |
| Key travel distance | 3.4 mm |
| Rollover | N-key rollover |
| Frequency band A small section of the spectrum of radio communication frequencies, in which channels are usually used or set aside for the same purpose e.g.for a channel on FM radio; for mobile networks to communicate with mobile phones. | 2.4 GHz |
| Polling rate | 125,1000 Hz |
| Bluetooth version The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0). | 5.2 |
| Angle adjustment (min) | 4.5° |
| Angle adjustment (max) | 9.6° |
| Design | |
| Backlight Product has a built-in light source for its illuminating. |
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| Backlight colour | RGB |
| Adjustable backlight |
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| Keyboard style The style of the keyboard e.g. straight, curved. | Straight |
| Adjustable keyboard height |
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| Product colour The colour e.g. red, blue, green, black, white. | Black |
| Surface coloration Type of surface coloration e.g. monotone, image. | Monochromatic |
| Material The material from which a thing is or can be made e.g. wood, plastic. | Acrylonitrile butadiene styrene (ABS) |
| Power | |
| Power source type What the power source is. | Battery |
| Keyboard battery type | Built-in battery |
| Battery technology The type of battery in the device, e.g. nickel–cadmium (NiCd). | Lithium Polymer (LiPo) |
| Battery capacity A measure of the charge stored by the battery. Determined by the mass of active material contained in the battery. | 3750 mAh |
| Battery life (max) Maximum battery life. Mobile Mark™ (2002) is the standard often used to benchmark battery life time. | 288 h |
| Charging source How the battery is charged. | USB Type-C |
| USB Type-C charging port |
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| Mouse | |
| Mouse included A mouse is included with this product. |
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| System requirements | |
| Windows operating systems supported Windows vesions wich can be used with the device. |
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| Mac operating systems supported Mac operating systems e.g. OS X can be used with the device. |
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| Linux operating systems supported 8 RT. Linux (9.4, 9.5), Red Hat Enterprise Linux 5.0 (supported with a pre-built package); SUSE Linux (10.3, 11.0, 11, 11.1, 11.2), Fedora (9, 9.0, 10, 10.0, 11.0, 11, 12, 12.0), Ubuntu (8.04, 8.04.1, 8.04.2, 8.10, 9.04, 9.10, 10.04), Debian (5.0, 5.0.1, 5.0.2, 5.0.3) |
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| Operational conditions | |
| Operating temperature (T-T) The minimum and maximum temperatures at which the product can be safely operated. | -10 - 50 °C |
| Weight & dimensions | |
| Keyboard dimensions (WxDxH) | 365.72 x 137.71 x 37.81 mm |
| Keyboard weight | 870 g |
| Packaging data | |
| Keycap removal tool |
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| Switch removal tool |
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| Packaging content | |
| Number of products included The number of products that are included in the package. | 1 pc(s) |
| Receiver included The product includes a receiver, which is a device for picking up an external signal. |
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| AC adapter included |
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| SKU | 834727 |
| MPN | KBKCKJ4H4 |
| Brand | Keychron |
| Product Condition | Brand New/Unused |
| Wired/Wireless | Wireless |
| Product Use | General |
| Warranty Period | 1 Year Warranty |
| Warranty Contact | https://www.keychron.com/ |
| Stock Availability | Available for Shipping |