Philips SpeechMike Air SMP-4010 (Slide Switch Model) - desktop dictation goes mobile with patented lossless speech technology. The Philips SpeechMike Premium has reached its highest stage of evolution. Benefit from all advantages of the industry leading dictation microphone without the constraints of a cable. Record your voice using a premium decoupled studio-quality microphone with a built-in noise reduction filter and achieve exceptional speech recognition results. Thanks to the revolutionary patented lossless speech technology the SpeechMike Premium Air offers maximum mobility without any compromises. The device achieves the same high speech recognition performance as the standard SpeechMike Premium with a cable.