DinoFire Wireless Presenter Finger Ring hdmi you can use up to

you can use up to 18 Blink 500 Pro systems at once to accommodate up to 36 wireless microphones

Because of the ability to get the best clarity up the top

Lithium battery: 2200mAh

5A (USB-C PD)Output 3 : 5V/1A

DinoFire Wireless Presenter Finger Ring hdmi you can use up toUnique Finger Ring Style: Finger ring concept is unique and practical, your hand remains relatively free so there's no need to set your ppt clicker down and misplace it. Rubber loop is adjustable to fit your finger PLUG & PLAY LASER POINTER PRESENTER: No need to install software, powerpoint clicker support page up, page down, black screen, full screen BRIGHT LIGHT & LONG CONTROL RANGE: Bright red laser light that is easy to see against most