... with: 3.5V Streak Retinoscope, 485 Single wall mount transformer, power cable with Plug, carton box.3.5V Streak Retinoscope, Order Code: 418 ... -0010485 Single wall mount transformer, Order Code: 485-00102m Power ... .5V Spare bulb of Streak Retinoscope, Order Code: 418-0910 Wall Mount Streak Retinoscope (SR24G)