DISCWASHER RD-1141 Dry CD/DVD Laser Lens Cleaner Specialized Demag Tone Test Conditions System For Best Audio Quality On-Disc Voice Instructions (ENG/FR/SP) Dry Laser Lens Cleaner 1 Brush On This Cleaner 7 Setup Tests &amp; Optimization Tools Seven quality tests and optimization tools One dry brush design restores full fidelity sound On-disc voice instructions and stereo set-up guide