Features: 1. Intelligent charging flip pen, ultra long battery life/highlighted indicator line/plug and play/low power consumption prompt. 2. Charging for 1 hour, with a battery life of 45 days, equipped with a USB fast charging cable. The negative electrode of the charging flip pen lights up and the blue light turns off. It can be used for about one and a half months on a single charge. 3. Plug and play does not require driver installation, intelligent charging low battery reminder, blue indicator light flashing, reminding you to charge in a timely manner. 4. Illuminate the red indicator line, which means pressing the indicator light to make the marking clear and bright, more accurate and efficient, and demonstrate focus. 5. 2.4G chip, farther and more stable, one step faster, no serial code, more stable signal sensitivity. 6. Convenient magnetic absorption, embedded magnetic receiver, easy to carry and not easily lost, automatic adsorption is convenient and fast. 7. One click open hyperlink, long press switch window, display interface insert hyperlink, whether it is video, audio or website, one click open, bid farewell to mouse constraints. 8. Compatible with multiple systems and software, suitable for various software versions such as WIN7 and above, MacOS/UnixAndroid/HarmonyOS, etc. 9. Silicone buttons are sensitive and silent, made of frosted silicone material. Equipped with mute buttons, the speaker is more comfortable. 10. Suitable for various scenarios: office work reports, school speeches, teaching and training, etc....