#MetalDetector #gpx4500 #gpx5000 GPX #z7000 Maintenance available for GPX 4500 and 5000. Maintenance for sound issues and battery upgrade to operate all types of headphones. Battery and main cable replacement. Home chargers with a one-year warranty. Battery maintenance, and if the internal board of the battery is damaged, it will be replaced. Original car charger head, Italian wires 1mm. Assembly or manufacturing of GPX 4500 and 5000 batteries in a plastic case is available, with a guarantee on its work.