Dual ultra-precision GPS satellite positioning instrument measuring acres; land area measuring instrument

Swiss Ublox 8th Fastest 10hz GPS Chip;

72 Channel search engine;

Big font; Backlight;

Simultaneously receiving GPS satellite signals and Beidou  satellite signals;

Continue to work more than 30 hours after 3 hours charging;

Rich functionality:Measurable area; distance; trajectory; slope and so on...