Features: | AULA F75 Max Side-Engraved Keycaps Wireless 3 in 1 Mechanical Gaming Keyboard with Screen & Knob | Gradient Gray, Reaper Switch (F75MaxGrR) | F75Max mechanical gaming keyboard | Connection: Type-C wired & 2.4G wireless & BT | Pluggable mechanical switch | RGB switchable lighting effects | Size: 327.69 (L) x143.17 (W) ×43.26 (H) ±0.5mm | Weight: About 975g (excluding wire/receiver) / About 1023g (including wire/receiver) | Rated voltage: DC 3.7V (full charge 4.2V) | Battery capacity: 4000mAh rechargeable lithium battery | Operating System: WIN XP/7/8/10/MAC/Android/iOS | Stylish design, | Gasket structure | , delicate and soft touch.Keycaps and mechanical switches are pluggable.The users can also purchase various brands of switches and personalized keycaps on the market for free DIY.The keyboard material is solid and the buttons are responsive.Two stage tripod with concealed independent storage receiver.The user-friendly design of the keyboard, combined with the Fn key, adds a series of commonly used shortcut function buttons.Keyboard return rate: wired mode 1000Hz, 2.4G mode 1000Hz, BT mode 125Hz.The BT/2.4G/wired mode of the keyboard supports full key and no impact.