With backlight: the keyboard is equipped with an orange backlight, does not use automatic sleep for 1 minute, does not use for 15 minutes, enters deep sleep. Mouse is orange light | Rechargeable: The keyboard is equipped with a 3000mAh lithium battery. The mouse is equipped with a 600mAh lithium battery that can be charged via microUSB. | Plug and Play: With a USB receiver (USB receiver at the bottom of the mouse, keyboard and mouse share a USB receiver), no need to install drivers | Retro Key Cap: A retro punk keyboard with a beautifully-looking, mechanical-looking keycap for ergonomics | Note: You cannot use the keyboard or mouse after receiving the goods. You can use the USB cable to charge the mouse or keyboard, use it while charging, and fully charge it in 3-5 hours. If you encounter a quality problem, please contact my customer service for after-sales service. Contact us on the order page to contact buyer support.