tactix Wrist-worn GPS navigator+ABCHigh-sensitivity GPS positioning with automatic calibrating altimeter, barometer and 3-axis compass. Bold, all-black watch is stealthy, yet stylish. It's scratch-resistant, curved lens is rugged and prevents reflection. Negative mode liquid crystal display with green LED. TracBack reverses the track log to navigate back to your starting point. Mark up to 1,000 waypoints and store up to 10,000 track points.