SR24F Desk-top Streak Retinoscope Set, Order Code: 418-2000 SR24F Desk-top Streak Retinoscope Set, Order Code: 418-2000Set complete with: 3.5V Streak Retinoscope, 486 desk-top power with handle, power adapter, carton box.3 ... 800mA, Order Code: 500-9009R4180 3.5V Spare bulb of Streak Retinoscope, Order Code: 418-0910 Desk-Top Streak Retinoscope Set(SR24F)