Standard 25*25*4MM high sensitivity GPS antenna UART/TTL,232 optional interface adopt KDS 05 PPM High Precision TCXO Built-in SQI Flash Built-in crystal and Picofarads capacitancefaster hot root Built-in LNA,Low-noise amplifier 1-10Hz Support AssistNow Online and AssistNow Offline GPS,GLONASS,,SBAS(WAAS,EGNOS,MSAS,GAGAN) Hybrid Engine Chip:UBX-G7020-KT C/A code,1023MHz Stream receive frequency:L1 (157542MHz) receive channel:56CH S11 SWR:less than equal 13 S11 :50Ohm+(-)5% S21 Log :greater than equal 200dB S22 SWR:less than equal 13 Location Performance: Less than 25m(Autonomous)(50%) Less than 2m(SBAS) rate:Less than 01m/s direction:Less than 05 Degrees Timing accuracy:30ns Reference coordinate system:-84 Maximum altitude:50,000 m Acceleration:Less than 4g Tracking sensitivity:-162dBm catch sensitivity:-160dBm root time:29s (in average) warm root time:28s(in average) hot root time:1s(in average) AGPS: colour:Main color green Material:ABS+ metal Package Contents: 1 * GPS Model 1 * Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.