The best thing about the SP1 dive computer is the surface interval feature. When returning to the surface from depth, the watch displays your surface interval countdown and the number below it was your last dive's bottom time. It's very simple to use, and watching your surface interval is very important for your safety. SP1 is a wrist computer specifically conceived for freediving and spearfishing. SP1 features all functions of modern digital watches (time, date, chronograph, countdown timer, daily alarm, dual time) and a dive mode. The Dive mode activates automatically with the water contact and resumes automatically after around 30 seconds from the water exit. During the dive, the display will show in real time: Instant depth, dive time and water temperature. Once on the surface, the SP1 indicates automatically the surface time. SP1 records up to 200 dives. The data stored for each single dive is: sequence number of the dive, date and time, water temperature, duration of the dive and maximum depth. Current Time Mode Display: The SP1 will display time in hour, minutes and seconds. The time can be displayed in a 12 or 24 hour format. In the Current Time Mode the user can also navigate to display the month, date, day of the week, hourly chime, daily alarm and temperature display. The Computer has an auto calendar from years 2000 to 2099 Chronograph Mode: The Chronographer Mode has a resolution of 1/100 of a second with a range of 99 hours, 59 minutes and 59.99 seconds. The Chronograph Mode can also display a split time function. Countdown Timer Mode: In the Countdown Timer Mode the SP1 has a resolution of 1 second with a range of 99 hours 59 minutes and 59 seconds. The Computer will beep once per minute for the last 10 minutes, beep once per 10 second for the last minute and beep once per second for the last 5 seconds. The SP1 will also beep for 30 seconds when countdown is to zero. Dive Mode: The SP1 Computer has a diver selectable feature for sea or lake (fresh) water environments and to display depth information in feet or meters. There is no need to activate the Computer, it will automatically activate when submerged to 5' (1.5 meters) and will deactivate when depth is less than 5' (1.5 meters). Once you're diving, the SP1 will display current dive duration, depth, dive site, current time, maximum depth and water temperature. The depth resolution of the SP1 is 0.328' (0.1 meter) with a maximum depth of 330' (100 meters). All critical dive information is automatically placed in the Computer Dive Log Memory for later retrieval. Temperature Display: The SP1 can be set to read temperature in Fahrenheit or Celsius with a resolution of 1°F / 1°C and a range from 14°F to 140°F (-10°C to +60°C). Dive Recall Mode: The SP1 Computer has a maximum record storage capacity of 199 and each dive recorded contains record number, starting time and date, dive duration, maximum dive depth minimum water temperature, dive site indication, and a delete current/previous/all records function. The SP1 Computer has 4 Mode Buttons for navigating through all functions. The EL" Button will activate the Computers Backlight for viewing information in low light conditions. The SP1 is powered by a 3 volt CR2032 battery and comes with a comprehensive Owner's Manual.
Please note that Freediving and spearfishing are inherently dangerous sports and should only be undertaken by experienced, well-trained divers. More powerful spearguns must be fired with two hands and a locked elbow to prevent injury from excess recoil. Do not load or unload your speargun out of the water, treat every speargun as if it were loaded. Never point your speargun at anything you do not intend to shoot. Before you begin your dive, be sure to check all your gear. You should never dive alone and your equipment should be serviced regularly. You should always plan your dive and dive your plan. You should discuss safety precautions, your plan, and contingency plans with everyone onboard BEFORE you dive. Communication among divers and operators is imperative. Failure to adhere to these guidelines could potentially result in physical harm or death. Blue Tuna Spearfishing is not responsible for any loss, damage, harm, or death caused by using any of our products.