In order to perform our work manufacturing a device, you must first implement a number of different processes related to various branches that today’s technology offers. First it was necessary to mature an idea. Then doing all the design of a model. Here the essential tool is a program for 3D mechanical design. With this, you can create a virtual model to scale, in which fit the various components that form the device. This perfection is achieved with initial details and forms, dimensions and tolerances adjusted exactly.

Once located in the market, or designed and made all necessary components which are applicable to the manufacturing of a small number of prototypes of the device. This small preproduction, serves to test and debug all the details that form it and get a device with the required perfection.


Currently aluminum is used as raw material for fabrication of the housing.

Because of its easy mechanism, good thermal conductivity, resistance, price …

It is essential, to choose the best alloy available in the market. You must have hardness and mechanical strength, good machining ability, good resistance to marine corrosion and unbeatable anodizing treatment. Currently being are used; aluminum alloy 6082 and 6063 (according to type of parts).

All parts made ​​of aluminum are then subjected to a protective treatment or surface coating called “anodizing”.

Depending on types of parts used, there are 2 types of processes: hard anodized (dark color), and type electrolytic anodized (silver or selectable on request).

These electrochemical processes, give the aluminum a very hard surface layer that offers a high degree of protection against the corrosive action of the sea, and mechanical abrasion and tear. Also gives them a very attractive appearance and color.





The appearance of this component in its high potency, has brought a revolution throughout the world. Gradually taking hold in all areas where artificial lighting is used. From the start in 2004, with the appearance of the first model of high power LED (luxeon Lumileds) were pioneers in Europe in the implementation of this component in a dive. When testing their advantages has become the cornerstone of our work. It has worked and used various models and brands as the market has been moving. Since 2009 we are working only with  CREE LEDS. This brand is a global leader and its use enables us to obtain the best performance available on the market. Most luminous efficiency, high intensity flow, reliability to shock and high temperature, low light degradation. Currently we are using models XRE-XML-XPG for top quality.

This branch of engineering is essential if we are to improve the performance of a basic circuit consisting of an LED limiting resistor and a battery. They are cursom designed and manufactured electronic circuits to make them ideal, this way we can improve the performance and operation of the device.


Gets to reasonable designs with higher power consumption equal to or less available battery capacity. It is possible to reduce the consumption of the LED and thus adapt the available energy in the battery to our need for more power or increased autonomy.

This intensity control is achieved according to the driver model in two ways:
– By generating and pulse frequency modulation PWM. By a microprocessor.
A different system used to control the current consumption by the LED and thus adjust its brightness, is through the use of a driver circuit with voltage conversion technology:

Flashlight models are manufactured with the two systems, we find that each has its own characteristics that could be interpreted as advantages and disadvantages:



Pros: very linear response and flat light, descent Independent battery voltage during discharge. By using it you get more time with the maximum light output, but no time or minimum residual light time.

Cons: more complex and voluminous Circuit. Performance does not exceed 90%.
Its final operation is very abrupt. Your total autonomy at full intensity is less than equal capacity. This is because the circuit draws more current as the battery voltage is low in order to keep the current supplied to the LED.



Pros: very simple circuit and therefore reliable, almost all the complexity of its operation is based on good programming for the microprocessor control circuit. It has a 99.99% yield unbeatable.

Does not disturb the discharge of the battery and LED response offering all residual light that allows the battery at the end of the load. This is important as it ensures the elimination of (sudden power-off).

Cons: Its behavior is not linear and the emission intensity is affected by the battery discharge. (This feature can also be taken as an advantage, since the decrease in intensity serves as a clear indication for charging status of the battery).

Basically the answer is fairly flat for a while, then starts a downward curve in the light response, and this is extended in time.


The only parameter that can not taken into account for the perfect design of such devices is the thermal dissipation factor at land use.

Making a correct technical design would require a size and very oversized shapes, they also provide the area required to dissipate the heat generated by the LEDs. (It is clear that this is not necessary to use only water because the water has a very high cooling power. But these devices necessarily have to be usable in any activity without being too bulky and finned therefore uncomfortable to use.

To solve the problem we have included another function to the microprocessor. (Control temperature). Using a thermal sensor (installed inside) the microprocessor knows what the temperature is of the device. When it reaches 60C º emitted intensity decreases to the point where it is no longer produced thermal increase. If refrigerated reissued with previously selected intensity.

This provides security since the device does not suffer excess heat.



Several models have been chosen to operate the appliance solution using a magnetic switch for several reasons:

  • It offers a perfect seal
  • No risk action and shift a mechanical seal affecting the apparatus.
  • Unaffected by external pressure.
  • Moving your thumb alone it can be operated accurately apparatus
  • Allows you easier use the various functions of a device.
  • Turn-off-regulate light intensity or change the channel

In this function the magnetic detection system used is the “Hall effect transistor”.

With its use it achieves a detection system practically invulnerable to external magnetic fields, and other traditional systems may cause inadvertent operation in the case of being influenced by such fields. For example loudspeakers.


In 2 models we have chosen the idea that they can provide two types of projection beam. Click Open or Closed.

In these models have been installed internally two separate channels, one for each LED group. Totally selectable, adjustable together or separately.


baterias dragonsub

We used several types as technology has advanced.

They were first gel lead acid batteries, then step to nickel – cadmium, later came the Nickel Metal Hydride. Now we are in the era of lithium ion battery.

Like the rest of batteries it comes in a cylindrical shape, but its use has advantages over previous accumulators approaching more to what could be as “perfect battery”. It has a greater storage capacity but equal size. It does not have the defect of the “memory effect” of his predecessors.

We use batteries from a reliable supplier with whom we have worked for years with good results.