Features: | AULA F99 Tri-Mode (2.4G/Wired/BT) Hot Swappable RGB Wireless Full Size Mechanical Gaming Keyboard | Blue White, Crescent Switch (F99UWCr) | F99 Mechanical gaming keyboard | Connection: Type-C wired & 2.4G wireless & BT | Number of keys: 99 keys | Pluggable mechanical switch | RGB switchable lighting effects | Lithium battery: rechargeable lithium battery 4000mAh*2 | Charging voltage/current: DC 5V / ≤ 830mA | Rated voltage: DC 3.7V | Dimensions: 390.63(L) × 146.78(W) × 42.57(H) ±0.5mm | Weight: 1183g | Operating system: WIN XP/7/8/10/Android/IOS/MAC | Stylish design with Gasket construction and a fine, soft and flexible feel | Keycaps and mechanical switches are pluggable | 4000mAh*2 large-capacity lithium battery can be recharged, with power switch, environmental protection and energy saving, saving worry and money, effectively extending battery life | FN + | key combination to switch between 15 RGB light effects | With the drive with music rhythm RGB lighting effect, there are 5 lighting effect modes to choose from under this lighting effect | Cooperate with the drive keys with custom functions and macro definitions | Humanized design of the keyboard, adding a series of commonly used shortcut