OOP.1.1 MobilePhoneDevice

public class GSM
{
    Display gsmDisplay = new Display();
    Battery gsmBattery = new Battery();

    private string model;
    private string manufacturer;
    private int price;
    private string owner;

    public string Model
    {
        get { return this.model; }
        set { this.model = value; }
    }
    public string Manufacturer
    {
        get { return this.manufacturer; }
        set { this.manufacturer = value; }
    }
    public int Price
    {
        get { return this.price; }
        set { this.price = value; }
    }
    public string Owner
    {
        get { return this.owner; }
        set { this.owner = value; }
    }
}

public class Display
{
    private int size;
    private int colors;

    public int Size
    {
        get { return this.size; }
        set { this.size = value; }
    }
    public int Colors
    {
        get { return this.colors; }
        set { this.colors = value; }
    }
}

public class Battery
{
    private string model;
    private int hoursIdle;
    private int hoursTalk;

    public string Model
    {
        get { return this.model; }
        set { this.model = value; }
    }
    public int HoursIdle
    {
        get { return this.hoursIdle; }
        set { this.hoursIdle = value; }
    }
    public int HoursTalk
    {
        get { return this.hoursTalk; }
        set { this.hoursTalk = value; }
    }
}