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 LCD screen timer and vibrating alerts 20-meter (65 ft.) range LED low battery alert Light indicator when USB receiver is detached Automatic sleep/wake feature Includes 2 AAA Batteries Compatible with Windows®/Mac®/Android/iPad iOS