<b>Doosl Advanced Digital Highlighting Presentation Remote</b><br> We are Doosl and we are glad to introduce you the presentation remote. No matter you are a teacher, trainer, businessman, presenter or speaker, and no matter how many presentations you have made, the innovative functions of the little gadget will definitely refresh your presentation and boot your confidence when present. Now, deliver an eye-catching presentation like never before with DSIT103S in your hand! <br> <br> <b>Specifications</b><br> Transmitter <br> Technology: Radio Frequency <br> Frequency: 2.4GHz<br> Control Distance: 65ft/20m<br> Battery: Rechargeable Li-battery<br> Working Voltage: 3.7V<br> Dimension: 5.1*1.3*0.8in /130*34*20mm (approx.)<br> Weight: 1.41oz /40g<br> <br> <b>USB Receiver </b><br> Operation System: Windows XP and above, Mac OS 10.10 and above<br> Dimension: 1.6*1.6*0.2in /40*15*5mm (approx.)<br> Weight: 0.07oz /2g<br> <br> <b>Note</b><br> 1. The actual wireless range may vary based on environmental and computing conditions.<br> 2. The anti-lost voice prompt is only valid when the speaker of the computer is on.<br> 3. The including TF card can be replaced with a TF card of more memory if needed.<br> <br> <b>What's in the Box?</b><br> 1 * Presentation Remote <br> 1 * USB Receiver (with TF card)<br> 1 * Micro USB Charging Cable<br> 1 * User Manual<br>