This product made of high quality aluminum alloy and powerful magnets. Excellent workmanship, a good partner for the office.Strong magnetic adsorption make your Phone easy auto-alignment and no metal plates or attachments necessary .Its powerful magnets will hold your phone firmly so it doesn’t fall off. Note: This is just a stand, NOT a charger. Metal ring is suitable for TPU/PC and other plastic materials, not suitable for silicone, leather and fabric materials.