Features: USB or RS-232 interface or attach on notebook or other navigation system PS2 connector or direct-USB or mini-USB Frequency: L1, 1575.42MHz C/A code: 1.023MHz chip rate Channels: 12 Sensitivity: -143dBm tracking, superior urban canyon performance Acquisition rate: cold start<120sec, 50-percent Warm start <32 sec., 50-percent Hot start<12 sec., 50-percent Reacquisition: 0.1secpnd on average Accuracy: position: 5M CEP (50-percent), 7M CEP (95-percent), without SA (horizontal) Velocity: <0.1M/second, without SA Dynamic conditions: altitude: <18,000M Velosity< 515M/second Acceleration:<4g GPS protocol: NMEA-0183 (V2.20) GGA, GSA, GSV, RMC Baud rate: 9,600, N, 8, 1 Power: 5V DC