KOKUYO presentation remote control ELA-FP1, USB connection compatible with Windows and Mac, compact size with a diameter of 32mm. - Brand: KOKUYO - Model: ELA-FP1 - Connection: USB - Supported OS: Windows, Mac - Size: 32mm diameter - Function: Presentation remote control - Battery: Button battery LR43 - Communication method: 2.4GHz - Weight: Approximately 2.5g [Condition] Previously, I saw someone giving a smart presentation in front of a screen, so I asked for the product name and purchased it. I had frequent opportunities to give presentations before, but after purchasing it, I had no opportunities at all, and I have now retired, so I am putting it up for sale. [Reference] Model name: KOKUYO ELA-FP1 (Obsidian) Please check the details by searching the web. [Other] After purchasing it new on Amazon, I stored it at home, so I have not confirmed its operation. There is a tear on the upper right of the box. Please understand.