More or less brand new opened loaded up with map tiles tested it tried it out repackaged This device works on both Meshtastic and MeshCore. 【Antenna】This version has an external antenna 【WIKI】wiki.lilygo.cc/ 【Github】github.com/Xinyuan-LilyGO/T-Deck 【Product service】If you have any questions or suggestions about the product, please feel free to contact us. We will answer your question as soon as possible 【Note】This device does not have a built-in battery meter, so the battery percentage display is inaccurate. This is not a product defect. Please refer to the internal blue light status for battery charging information.