Feature: 1. Integrated plug-in acceptance makes this wireless pointer easy to use, no need to install the driver, which is ready to use. 2. For easy battery replacement of two AAA batteries(not included), with battery replacement reminder, such PPT pen is with easy battery replacement, economical. 3. Support one-click hyperlink, this remote control pen can be easy to use in practicality. 4. 1150mAh battery capacity provides laser presenter long endurance for energy-saving. 5. Entitled with pratical adoptability, the remote control pen supports page turning for extreme user experience. Specification: Item Type: Laser presenter Product Model: R400 Laser Range: 600m Remote Control Distance: 100 meters Transmitter Power Supply: Two AAA batteries (without batteries) Battery Capacity: 1150mAh Voltage: 3.6V-4.2V. Package List: 1 x Laser Presenter1 x English Manual1 x USB Interface Note: Transmitter battery is not included.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.