Unistrong G390 professional gps handheld

GPS performance

Receiver

16 channels (L1 C / A code) 

Antenna

built-in GPS antenna 

Positioning accuracy 

single point positioning: 3-5 meters (2D  RMS) 

SBAS: 1 - 3 meters (2D RMS) 

vertical positioning: <3 m 

Power 

2 AA Ni-MH battery, can work more than 12  hours (typical) 

or 2 AA alkaline batteries, can work more than 8 hours (typical):

Data communication and storage

Data communication

USB, RS232 

Data interface

NMEA0183 output,

Binary data output

Memory

Micro SD, 2G (applies only to card machine) 

Screen

Display

2.4 " TFT color screen, 

240 × 320 pixels, with backlight

Operation panel 

11 keys, with night vision

Maps

detailed maps of prefecture-level cities and above, maps of the road network of counties and above, with points of interests displayed 

support inputting POI 

support DIY maps

GIS functionality 

Data collection 

collect data of points, lines, and surfaces

Physical properties

Size

122.5mm × 61.8mm × 32.0mm (L × W × D) 

Weight 

138 g (without batteries)

Temperature

operating: -20 °C ~ +60 °C 

storage: -30 °C ~ +70 ° C 

Dustproof and waterproof 

IP67

Unique features

equipped with a built-in electronic compass, and a built-in barometer. The former guarantees the right direction in case of weak GPS signal; the latter can show real time change of height and air pressure, minimizing the height deviation to less than 3 meters.