Dual connectivity with Bluetooth or 2.4GHz wireless connection USB receiver supports AES 128-bit encryption, preventing hackers from taking over your presentation or downloading viruses onto your device Antimicrobial infused protective finish to the material creates a cleaner surface, protects the presenter, and works continuously to prevent the growth of microorganisms Red laser pointer emphasizes key points 20-meter (65 ft.) range LED low battery alert Light indicator when USB receiver is detached Automatic sleep/wake feature Includes 1 AAA Battery Compatible with Windows®/Mac®/ Android/iOS