Features 1、EXQUISITE and COMPACT: The presentation clicker is exquisite and compact, with a slim body design that is easy to carry and use at any time 2、ERGONOMIC DESIGN: The wireless presenter gives full play to the ergonomic design, which is comfortable to hold and convenient for long‑term use 3、RF2.4GHZ WIRELESS: The presentation clicker uses RF2.4GHz wireless technology, 360 degree unlimited direction, open space operation distance of about 50meters/55yd 4、SCOPE of APPLICATION: The presentation clicker is a professional slide teaching tool, suitable for Windows win8, win7, Vista, XP, Mac OS Android. 5、CAPACITIVE STYLUS: The wireless presenter has a capacitive stylus function, supports USB3.0, USB2.0, USB1.1 Specification Item Type:Presentation Clicker Material: Plastic Wireless Frequency: RF 2.4GHZ Wireless Technology Product Size: Approx. 144mm / 5.7in Approx. 12.5mm /0.5in Approx. 13.5mm /0.5in Remote Control Distance: Up to 50meters/55yd (open distance) Interface: Support USB 3.0, 2.0, 1.1 Adapter Battery: Single AA AAAA 1.5V Battery (delivered without battery) Support system: Suitable for Windows win8, win7, Vista, XP, Mac OS Android. Package List 1 x Presentation Clicker 1 x USB Receiver 1 x User Manual 1 x Presentation Clicker Cover 1 x Storage Bag