This is the Cressi Goa Wrist Mount Scuba Diving Computer

Features:

• High contrast display with extra large numbers
• Easy access menu
• 12/24 time format with calendar and seconds
• Precision stopwatch
• Second time setting
• Alarm clock
• Backlit display
• Surf time, desaturation and no fly time calculator
• Lets you know when battery is empty
• Metric or imperial units
• Long-lasting battery
• Battery replaceable by user
• AIR/NITROX PROGRAM
• CRESSI RGBM algorithm
• Complete diving data processor
• PPO2 1,2-1,6 configuration
• Graphic indicator of CNS toxicity level of oxygen
• Safety stop indicator
• Multiple level safety factor configuration
• Altitude configuration
• Algorithm for managing uncontrolled ascent
• Suitable for repeated, multiday decompression diving
• It is possible to alternate between nitrox and air diving even during desaturation
• Visualisation of time at dive phase
• Add / remove deep stop
• Alarm in case of breach of ascent speed, decompression or PPO2
• It is possible to disable the ascent alarms
• Indicates time at dive phase
• Possibility of eventual total reset, useful for renting purposes
• Planning: scrolling of no-decompression limits
• FREE (APNEA) PROGRAM
• Display of all diving parameters
• Depth
• Temperature
• Dive calculator
• Maximum dive depth
• Dive time
• Length of surface interval between each dive
• Length of diving session

The GOA has a diameter of only 48mm and a high contrast display of 35mm. It is a scuba diving/apnea watch-computer of extremely reduced dimensions. It is also an ideal watch for other underwater activities, thanks to the deactivation option of the dive" functions that avoids unnecessary alarms ringing while you're snorkelling or swimming.

The display is made of mineral glass and the case is heavy duty with steel buttons that have an underwater resistance of up to 120m.
Rubber wrist band with stainless steel buckle. Plastic/Steel bezel and back cover "