A third style, the Printed Spiral, is made only by Tesoro for use with pulse induction circuitry. It offers good sensitivity to a broader range of target sizes and improved sensitivity to less conductive targets such as fine gold chains. All searchcoils are electrostatically shielded and waterproof. There are certain features needed for certain places the device is going to be used for. If you intend to use it on the beach, the terrain wont be that rigorous. But you are going to need waterproof protection.
If this is your first metal detector purchase, consider getting some professional and expert advice to make sure that you have making the right choice. Metal detectors usually come with a complete control box containing the controls, circuitry, batteries, microprocessor, and the speaker. Metal detectors also include a search shaft that connects it to the coil and the control box. Metal detectors come with a control box that contains the circuitry, controls, speaker, batteries and the microprocessor; a shaft that connects the control box and the coil; a search coil that actually senses the metal; and a stabilizer that keeps the unit steady as it is moved. The basic...