This is the Oceanic Scuba Package Excursion BC, Pro Plus 4, Zeo Regulator, Alpha 10 Octopus Features: Oceanic Excursion BC/BCD QLR4 Rear Inflation Bladder Buoyancy Compensator: Rear inflation bladder provides up to 58 lbs lift QLR4 Integrated Weight System 20 lbs plus dual 5 lbs rear Generous zippered utility pockets with knife mounts Pre-bent welded stainless steel D-rings Patented adjustable depth compensating cummerbund Streamlined harness with reinforced contoured shoulders Padded backpack with lumbar support Oceanic Pro Plus 4.0 Scuba Diving Computer Comsole with Compass NON QD: Bigger and better than ever, the ProPlus 4.0 features the latest Bluetooth 4.0 technology. Modes of Operation AIR, NITROX, GAUGE Push Buttons 2 Mounting Options CONSOLE Activation Water or Push Button Algorithm Basis Modified Haldanean / DSAT (Diving Science and Technology) Database / Z+ Altitude Algorithm Basis NOAA O2 Limit Basis NOAA Tissue Compartments 12 (5 to 480 minutes) Automatic Altitude Adjustment 2,000 - 14,000 ft / 610-4200 m Decompression Capability 10 - 60 ft (3-18 m) Automatic Safety Stop Prompt YES Cylinder Pressure and Air Time Remaining YES Audible Alarm YES Alarm Acknowledgment (U/W Deactivation) YES Ascent Rate Range 3-9 m/min - 6-18 m/min Ascent Rate Maximum 30 fpm (18m) OceanGlo Backlight (Push Button) YES SmartGlo Backlight (Sensor) YES Diver Replaceable Batteries YES Battery Type CR2 Battery Life* 300 HOURS Oceanic Zeo Pneumatically Balanced Scuba Diving Regulator 1st & 2nd Stage: Pneumatically balanced second stage automatically maintains consistent inhalation effort throughout dive Diver adjustable inhalation effort allows the diver to control a desired level of airflow at any time. Patented Dynamic Adjustment automatically maintains inhalation effort throughout the dive Adjustable Venturi Switch (A.V.S.) for simple dive/pre-dive adjustment Inline ball swivel reduces jaw fatigue orthodontic mouthpiece paired with the FDXi first stage Oceanic Alpha 10 Octo Scuba Diving Octopus: The best price-to-performance ratio in its class Designed to perform to the U.S. Navy's Class A standards Inexpensive to maintain Available with Miflex Hose Pneumatically balanced demand valve Integrated Purge Button Orthodontic Mouthpiece Nitrox Compatibility - Standard to 40% Weight (without hose) - 6 ounces Dimensions (front profile) - 2.9 inches