Describe the work
Tell the team what you want to find or measure, the approximate target size, the region in Spain, ground and water conditions, known interference and your experience. If a fact is uncertain, say so. A clear field brief is more useful than naming a model without explaining why it is being considered.
Ask for what can be checked
If you have a product URL, include it. Ask which coil, sensor, software, battery, training and warranty are included. Request a current written price, availability and delivery terms for the precise kit. Save the reply and date with the product page for later comparison.
A concise message structure
A useful message can follow four lines: what you hope to find or measure; where and under which known conditions you will work; which model or category you have already considered; and the decision you need to make. Add a Spanish product URL if you have one. Ask the operator to distinguish confirmed facts from assumptions and to list any information still needed. Before sending, remove private location details that are not necessary for the first reply. Keep the answer with its date so later product or price changes are visible.