irocks K103R three-mode Bluetooth mechanical keyboard-hot-swappable own axis Aurora Blue

Product model: IRK103R Interface: Wired: USB & Wireless: 2.4GHz & Bluetooth 5.2 Number of keys: 81 keys Switch form: pluggable pre-lubricated mechanical switch Anti-ghost key design (NKRO) for all areas Multimedia keys: 12 keys Backlit special effect keys: 4 keys Voltage: DC 5V Charging interface: USB-C ( Rechargeable lithium battery capacity: 3750mAh USB cable length: about 180 cm Product weight: approx. 810 g Product size: 331 (L) X 144(W) X 44(H) mm Receiver interface: USB Receiver product size: 18.6(L) X 14.5(W) X 6.1 (H) mm First time use and charging instructions 1. Please do not use a fast charging charger to charge this product to avoid product damage. 2. When the indicator light flashes red, it means that the voltage is low and please charge. The light will turn to a steady red light during charging. The red indicator light will go out when fully charged. 3. When using it for the first time or not using it for a long time, the battery needs to be charged to ensure that the keyboard functions normally. If not used for a long time, the battery voltage will slowly decrease. Please be sure to fully charge the battery for a period of time (4 to 5 months) and before use to extend the battery life. Charging method: 1. Connect the included USB cable to the computer or USB DC5V charger 2. Connect the other end to the keyboard for charging, and the charging indicator light will light up red. 3. After charging is completed, the red light will go out Note: It is recommended to turn off the backlight function when charging to save charging time