1、This pen have bright red laser pointer, very eye‑catching and clear at a glance, helps a lot in work or teaching 2、The product possess 4GHz wireless transmission speed, wireless range up to 20 meters 3、Come with high compatibility, plug and play, possess stylish appearance, compact and portable 4、Realize one‑button slide show remote control, up to 9 buttons, support multiple functions, very practical 5、4GHz wireless PPT clicker have wide range of use, can be used for multimedia, office, teaching pointer demonstrator 1 x 2.4GHz Wireless Presenter1 x Signal Receiver1 x User Manual1 x USB Cable Item Type: 2.4GHz Wireless PresenterRemote Control Method: 2.4GHz wirelessRange: ≤ Approx. 20meter / 65.6ftNumber of Keys: 9 KeysBattery: Rechargeable 300mAhOutput Power: 3.3mWSize(LxWxH): Approx. 140 x 18 x 19mm / 5.5 x 0.7 x 0.7in