1. [One-click operation, free to use] - This function is based on the air mouse presenter technology. In PPT or WPS presentations, press the marker key and move the mouse to take notes. 2. [RF technology, free presentation] - This function is based on the air mouse presenter technology. In PPT or WPS presentations, press the marker key and move the mouse to take notes. 3. [Plug and play] - The mini receiver saves space on the computer's USB port. It has an integrated design for easy carrying. 4. [Widely applicable] - Supported systems for PPT remote control: Windows 7/8/10, Mac OS; Supported software for presenter remote control: PowerPoint, Google Slides, Prezi, Keynote, Numbers, etc.; Also applicable to PDF, Word, Excel, ACD See, websites, etc. Specifications: - Applicable systems: Android, Windows, Mac OS, Linux - Remote control distance: 100 meters - Battery: 360 mAh polymer lithium battery - Operating voltage: 3.6 - 4.2 volts - Output power: Less than 12 milliwatts - Laser wavelength: 650 nanometers (red light) - Laser distance: 200 meters - Transmission frequency: 2.4 GHz - Color: Black - Material: Plastic - Dimensions: Approximately 140×19×19.5 mm Package contents: - 1 presenter - 1 receiver - 1 charging cable - 1 instruction manual in both Chinese and English Only the above items are included in the package. Other products are not included. Note: Light and different displays may cause the color of the item to vary slightly from the actual product. A measurement error of ±1 - 3 cm is allowed.