Citizen created dual purpose Promaster Alti-Depth Meter by combining the altimeter used in Promaster climbing watches with depth meter in Aqualand diver's models.

Features:

• Altitude measurement: -300m to 6,300m (unit: 5m)
• Depth measurement: 1m to 80m (unit: 0.1m)
• Temperature measurement -9.9 degree to 40 degree
• Altitude memo function
• Depth, diver time and rapid ascent alarm
• Log memo function
• Water resistant to 200 meters
• Accuracy +/-20 sec. per month