【FINGER RING PRESENTATION CLICKER】 Finger ring concept is unique and practical, your hand remains relatively free so there's no need to set wireless presenter remote down and misplace it. Rubber loop is adjustable to fit fingers of different size 【PLUG & PLAY POWERPOINT CLICKER】 No need to install software, this remote clicker for presentation supports page up, page down, black screen, full screen, super easy to use 【BRIGHT LIGHT & LONG CONTROL RANGE】 Bright red light that is easy to see against most backgrounds; Wireless range of presentation clicker is 40-50FT, powerpoint presentation clicker light range is 328FT 【WIDELY APPLICABLE】 Clicker for powerpoint presentations supports systems: Windows 2003/XP/Vista/7/8/10, Mac OS, Linux, Android; Presenter clicker supports software: PowerPoint, Google Slides, iWork (Keynote & Numbers & Pages), Prezi, MS Word, Excel, ACD See, Website, etc. 【RECHARGEABLE PRESENTATION REMOTE】 Only requires 1 hour of charging time, support one week of using, slide clicker support auto sleep function to save energy. 2.4G RF frequency, which is an ISM free frequency can be used world-wide

Transmitter Features:
Technology: Radio Frequency
Frequency: 2.4GHz
Light Color: Red
Control Distance: 40-50ft (12-15M)
Light Distance: >330ft (100M)
Max Output: < 5mW
Working Voltage: 1.5V
Sleep Current less than10uA
Dimension: 1.9*1*1.9 inch

Receiver Features:
Operation System: XP, Windows 7/8, Mac OS, Linux, Android
USB Version: USB 1.1, compatible with USB2.0, USB 3.0
Working Voltage: 5V DC

Package listing:
1 x Wireless Presenter remote control
1 x Wireless Receiver
1x Portable Case
1 x USB Charging Cable
1 x User Manual