The colour code bands from left to right are yellow,violet,brown for 4,7 and one zero in Ohms or 470 Ohms. This is normally abbreviated to 470R in computer generated electronic schematic diagrams. The tolerance band is gold for +/-5%. A 0.5 Watt power rating is higher than required in this circuit but the higher power makes the resistor physically larger and so it is easier to handle in the terminal block, and reading the bands is also easier.