[ One-key for , freely for ] - The function bases on Air mouse Flip pen technology. In the or WPS presention press the label key also move the mouse to take notes. [ RF, demo freely ] -The function bases on Air mouse Flip pen technology. In the or WPS presention press the label key also move the mouse to take notes. [ Plug and Play ] - Mini-receiver, saving computer USB space, integrated design, easy to carry. [ Widely APPLICABLE ] - Powerpoint remote supported : /7/8/10, OS; Presenter remote supported software: PowerPoint, Google Slides, Prezi, (Keynote & Numbers & ), PDF, Word, Excel, ACD See, Website, etc.; SPECIFICATION: : Android/windows/ os/linux Remote distance: 100m Battery: 360 mAh polymer lithium battery Working voltage: 3.6V-4.2V Output power: less than 12mW Lasers wavelength: 650nm (red light) Lasers distance: 200m Transmitting frequency: 2.4GHz colour: black Material: plastic Size: about: 140x19x19.5mm Package Contents: 1 x page turning pen 1 x receiver 1 x charging cable 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.