Condition: 100% brand new Item type: Voice Control Pen Material: ABS Color: As picture shown Weight: Approx. 85g Connection: Wireless 2.4GHz Carrier frequency: 2.420GHz-2.483GHz Effective distance: air mouse about 10m/32.8ft, voice about 4m/13.1ft Number of keys: 10 keys Battery: 200mah lithium battery System support: for Windows, for Android, for OS X, for Linux1One?button operation, remote control, providing high?quality operation experience. 2Ergonomic design can provide a comfortable feel. 3Plug and play, no driver installation required. 4In addition to the basic keys used for PPT presentations, it is compact, convenient, and powerful. 5It also has wireless mouse function, screen touch function and microphone voice function. 6Wide compatibility, applicable to mainstream computer operating systems. 1 x Control pen 1 x Receiver 1 x Contactor 1 x Data line