beam of 2000 metres Wireless feature gives you the freedom to use this laser light anywhere anytime without the worry of charging it again and again . You may have to use AAA batteries for this alser light and you are good to go. This green laser light pointer can be used for various activities as well, including presentations in schools, college and even offices, stargazing, other outdoor activities and many more educational purposes. This green laser light pointer by The Black Kite is also suitable for pet owners to use it as a chasing laser pointer for cats and dogs. You can have a fun and play time with them as well. Single button for switching multiple modes easy control to use. Super handy, portable and easy to carry . Wireless feature gives you the access to use anytime , anywere. Read Less