Atos Medical Provox FreeHands FlexiVoice Heat Moisture Exchanger has 3 Different Speaking Valves.

• Three different speaking valves with a membrane in 3 flexibilities - light, medium, strong to provide the ability to choose depending on your activity level.
• Discrete design, low profile, discrete color and lightweight.
• Finger occlusion provides the option to speak with manual occlusion whenever needed.
• "Click and Go" assembly.
• Locked Mode function, prevents the membrane from closing.
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