How to Use:
The keyboard and mouse are each loaded with 2 AAA batteries, which can be used after plugging in the adapter

Specification:
Item Type: Keyboard Mouse Set
Material: ABS
Keyboard Battery Type: 2 x AAA Batteries Required (not included)
Battery Type: 2 x AAA Batteries Required (not included)
Support System: Compatible with Mainstream Operating Systems
Applicable Equipment: for Desktop Computers, Mobile Devices, Tablet Computers, Etc.

Package List:
1 x Keyboard
1 x Mouse
1 x Adapter

Note:
The adapter is on the back cover of the keyboard battery. If not, it is on the back cover of the battery. The keyboard and share a USB adapter! The delivery does not come with batteries, please prepare 2 AAA batteries for each keyboard and mouse.