Magnetic holder for GSM devices to attach to the car's ventilation grille. Keeps the phone in an optimal position for speakerphone calls while ensuring easy access to the mounted device. Ergonomic shape. Mounting methods: - Attach the metal plate with its adhesive side to the outside of the phone's back cover - Place the plate between the phone's back cover and the device case In the package: - Magnetic holder (diam. 3.5 cm) - self-adhesive pad allowing the attachment of a phone with a holder (diam. 3 cm) weight: 28 g