... 3. In retail packing 2.4GHz Universal Wireless Remote Control Keyboard Product Specifications: 1. Functions: 2.4GHz, wireless, suitable for Tablet PC, ... : 3 * AAA batteries (not included) 4. Frequency: 2.4GHz wireless System Requirements: PC with USB port 5. Standby Time:6 months ... Windows system Devices:PC, Smart TV, Set-top-box, Android TV Box, Media Player Package include: 1 * 2.4GHz wireless air ...