Ebook: supports document format Benefit: Allows reading documents directly on the device, enabling portable access to manuals, reports, and notes. Video format: 128x160 (you need to use the conversion tool to convert by yourself) Benefit: Enables viewing videos on the device after you perform the required conversion, suitable for offline watching on a small screen. Bluetooth compatible version: 5.2 (supports both broadcast and video) Benefit: Wireless connectivity for audio or video playback with compatible devices, and supports broadcast functionality for easy sharing. Charging interface: TYPEC USB1.1 charging Benefit: Convenient USBC charging with widely available cables and adapters, simplifying power replenishment. Use scenarios On the go reading: Carry the device to read documents or manuals during commute or travel without carrying multiple devices. Off line video viewing: Convert your videos to the supported 128x160 format using the provided tool, then watch them on the device and optionally pair with Bluetooth headphones for private playback. Quick setup and daily use: Use USBC charging to keep the device powered and ready for reading or video playback at home, in the office, or while traveling.