When you buy an SC-1 it comes out of the box as an idiot-proof Compass and Speedometer. If you want more functionality, you can download and install the free Velocitek Control Center Windows application. Velocitek Control Center allows you to enable the SC-1's advanced modes, download GPS data from your SC-1 and launch birds-eye view video replays of your races and training sessions in GPS Action Replay.

Speed Resolution:
0.1 Knots

Heading Resolution:
1 Degree

Display Update Rate:
2Hz (once every 0.5 sec.)

Water Resistance:
25m / 75ft 

Main Display:
30mm / 1.2" digit height

Secondary Display:
15mm / 0.6 digit height

Date Logger:

• Lat, Long, Time, Speed, and Heading recorded at 2Hz (once every two seconds)
• 40 hours of capacity
• Data Download Requires Windows XP or Vista

Batteries:

• 3 X AA
• 25 hour endurance
• Rechargeable or Disposable

Dimensions:
162 x 110 x 40mm
6.4" x 4.3" x 1.6"

Weight:
437g/0.96lb 

Bouyancy:
Positive

GPS Chipset:
U-Blox Antaris LEA-4A
16 Channel

Warranty:
Two years