Features UBLOX M10 chip Compass module QMC5883L integrated Built-in farad capacitor for faster hot start Onboard LNA (Low Noise Amplifier) 10 Hz Refresh rate Built-in Flash High sensitivity 18x18mm GPS patch antenna, low power consumption, strong signal, lightweight. Specifications Compass module: QMC5883L Baud Rate: 4800bps-115200bps (Default - 115200bps) Sensitivity: Tracking: -167dBm Cold start: 26s Hot start: 1s Maximum height: 50000m Maximum speed: 500 m/s Speed accuracy: 0.05 m/s Maximum acceleration: ≦ 4G Refresh Rate: 10 Hz GPS patch antenna size: 18 x 18 mm Total dimensions: 20 x 21 x 6.5 mm Weight: 5.2 g(±0.5g) Input Voltage: 3.3-5.5 V, current 40mA GPS pin definition: RX/TX UART Compass pin definition: SDA/SLA Packing List: 1 x BLITZ M10 GPS 1 x Cable set