The high tech Lithium-Ion powered Bladefish looks like a jet engine and generates much more power than comparable previous generation lead acid propulsion devices. Unlike them, it can be recharged in a fraction of the time and can be easily stowed in luggage. They are much smaller than their leaden predecessors and are highly maneuverable and compact.The 3000 series Bladefish weighs only 9.2 pounds (battery included) and is less than half the weight of competitive DPV's. Battery : Lithium Ion 18VPower Rating: 200 Watts Motor: 18VRPM (Max): 500No. of Speeds: single Speed Rating: 3mphDepth Rating: 100ft.Run Time (Approx.): 40 mins.Weight (With Battery): 9.2 lbs Dimensions: 15 in. Diameter by 5 1/2 in. Width Buoyancy: Neutral Additional Features: Computer Controlled Circuitry, Double Seals, Battery Life Meter Storage Bag: Included Soft Grip Handles: Yes Charger Type: Fast Charging Time: 2 hrs.'Ready To Go' Charge: 1 hr