Tracks up to 20 satellites.Receiver: L1, C/A codeMax update rate: 1 HZ.Antenna Type: Built in Patch AntennaMinimum signal tracked: -159dBmDimension: 64.5 x 42 x 17.8 mmWeight : < 84gWaterproof: IPX7 Standard (IEC 60529)LED function:Power On/Off and NavigationUpdate IndicationOperating temperature: -40 to +80Storage temperature: -45 to +100Operating humidity: 5% to 95% No condensing.Power consumption: < 80mA at 4.5- 5.5V input