Shipping Policy Learn More Return Policy Learn More 1 Year Warranty Learn More Help Centre Learn More Keychron K4 Wireless Keyboard K4 version 2 has full-size functionality in a compact design with 100 necessary keys. The hot-swappable option with preinstalled Gateron Mechanical switches offers the freedom to customize per-key typing experience without soldering. FEATURES Wireless & Wired Modes Connects with up to 3 devices via Bluetooth and switch among them easily. With high reliable and broad compatibility Broadcom Bluetooth 5.1 chipset, the K4 is best to fit home, office and light gaming use while connecting with your smartphone, laptop and iPad. It also has wired mode with USB Type-C connection. HOT-SWAPPABLE Hot-swappable means to customize your typing experience without soldering, just pop them in and it’s done. *The K4 Gateron (Hot-swappable) version keyboard support altering switches.The socket of Gateron (Hot-swappable) is compatible with almost all the MX style 3pin and 5pin mechanical switches on the market (including Gateron, Cherry, Kailh, etc.). SMD-LED compatible switches are the best for showing the backlights. WITH NUMBER PAD Comes with a 100 keys (96%) layout included number pad and relocated Del key that offers convenient access to all the essential keys* for Mac and Windows in a small footprint.*Num Lock works with Windows OS only. COMPATIBLE WITH ALL DEVICES Compatible for both macOS and Windows. Keychron is one of only a few in the market that comes with a Mac multimedia keys layout for Mac enthusiasts.For Linux users, we also have a dedicated user group to help with the experience.  With Mac multimedia keys layoutHigh-res layout and keycap size here Mechanical Switch Durable Gateron G Pro mechanical switch with a 50 million keystroke lifespan to provide an unrivaled tactile responsiveness LARGEST BATTERY The K4 can last up to 240 hours typing (backlight off) with a 4000 mAh big battery. 15 TYPES OF RGB The K4 has an enchanting RGB backlight with modern keycap legends to help you type in dim environments; available in 15 types of flashing light mode as well as a static white backlight. Reviews are in. SPECIFICATIONNumber of Keys: 100 keys (*Num Lock works with Windows OS only) Switch: Gateron G Pro Red, Blue, Brown*The “~” key supports 3pin switch onlyNumber of Multimedia Keys: 12 Main Body Material: ABS / Aircraft-grade aluminum frameKeycap Material: ABSLayout: ANSIPolling Rate (Wired Mode): 1000HzPolling Rate (Wireless Mode): 90Hz CONNECTIVITY AND POWERBacklit Types: 18Backlit: Adjustable 4-level RGB backlitSystem: Windows/Android/Mac/iOSBattery: 4000mAh Rechargeable li-polymer batteryBT Working Time (Backlit off): Up to 240 hours (Lab test result may vary by actual use)BT Working Time (Single LED): Up to 68 hours (Lab test result may vary by actual use)BT Working Time(RGB): Up to 72 hours (Lab test result may vary by actual use)Charging Time: Around 3 hoursConnection: Bluetooth and Type-C cableBluetooth version: 5.1Bluetooth Device Name: Keychron K4Compatible System: macOS/Windows/ PHYSICAL UNITDimension (Plastic frame version): 371 x 124 x 38mmWeight: About 770g / 1.69 lbsDimension (Aluminum frame version): 376 x 129 x 38mmWeight: About 933g / 2.05 lbsHeight incl. keycap (front) 32mmHeight incl. keycap (rear) 41mmOperating Environment: -10 to 50℃PACKAGE CONTENT1 x Keyboard1 x USB-A to USB Type-C Cable1 x Keycap Puller1 x User Manual