The Caitu K20B adopts a relatively new GNSS chip design, which can support separate or combined positioning of Beidou, GPS, and GLONASS, with fast and reliable satellite positioning; An open map architecture with built-in national maps, supporting users to create their own vector maps, satellite images, and various raster maps; 2.2 "semi reflective and semi transparent color display screen, clear display under sunlight, better resolution than similar products, delicate picture; Supports lithium battery and AA battery power supply, suitable for long-term outdoor work; The product features a sophisticated three proof design, making it easy to carry and safe to use.