This is an excellent dive watch that has about 100 dives on it. The O ring and battery were replaced by Dive Watch Doctor on 5/26/2021, and tested to 162'
"Suunto's top-of-the-line wristop computer has everything a demanding diver could want. The Stinger has three separate diving modes with its own profile memory: regular air dive, enriched-air nitrox dive, and freediving/depth gauge with timer mode. In addition to having information available to you at all times, the Suunto Stinger records and stores data for later analysis. You can view, compare, and analyze your diving performance through a specially designed PC interface.
The Stinger comes in three different versions: this one with a metallic band, one with an elastic strap, and one with a titanium housing.
Suunto Stinger implements a Suunto-specific ceiling and floor feature. The decompression floor is the deepest point at which the ascent time will not increase. The decompression ceiling is the shallowest depth to which you should ascend. These depths provide the range where the diver utilizes the decompression stop most efficiently. Suunto Stinger uses the Suunto Reduced Gradient Bubble Model (RGBM) for decompression calculations.
You can adjust the Suunto Stinger for diving at altitudes up to 3,000 meters (10,000 feet), and a personal level of conservatism can be added if desired. It enables you to set dive time and maximum depth alarms before your dive. The clear electro-luminescent backlight is activated automatically when dive alarms are given, making the dive parameters clearly visible and legible. The system is highly energy-efficient with only minimal power consumption. The built-in dive planning function helps you plan your next dive by showing you the no-decompression time data for different depths.
In the Nitrox mode, you can program Suunto Stinger for nitrox mixtures of 21 to 50-percent oxygen in 1-percent increments. You can also adjust it for oxygen partial pressure from 1.2 bar to 1.6 bar in 0.1-unit increments. Suunto Stinger gives both visual and audible alarms when the limit for oxygen partial pressure, CNS or OTU values are exceeded.
For freediving enthusiasts, Suunto Stinger introduces a 1-second precision timer with selectable 2, 4, 10, 20, 30 or 60-second profile memory-sampling rates. After 5 minutes of continuous diving in the Free mode, it automatically switches to Gauge mode. In both the Free and Gauge mode you can use a run-time timer. This makes Suunto Stinger also ideal for technical and military diving.
The triple o-ring pushbuttons and its monocase design without a separate rear cover make Suunto Stinger virtually leakproof. The case has a pressure rating of 20 ATM (660 feet), so you can rely on the Stinger to work at the deepest depths.
The Suunto Dive Manager (SDM) software that enables deeper understanding and better graphical representation of the data recorded and stored with Suunto Stinger. With SDM you can upload your dives to a PC and create a more detailed dive logbook. Here you can analyze and plan your sports activities and keep a training diary.