Specs

Laser
Class: 2 laser
Max output: Less than 1m W
Wave Length: 640～660nm (red light)

Battery
Battery type: 2 AAA batteries
Battery life (Laser pointer): 20-hour maximum
Battery life (Presenter): 1050-hour maximum

Connectivity
Wireless technology: 2.4 GHz wireless technology
Operating distance: Approx 32.81 ft (10 m) 3It may vary based on use and computing conditions.

PACKAGE CONTENTS
Logitech® Wireless Presenter R400
Wireless mini-receiver
2 AAA batteries
Carrying case
Quick-start guide

WARRANTY INFORMATION
1-year Limited hardware warranty