Coniler Smart Hearing Amplifier with Digital Noise Reduction, Rechargeable Sound Aids with Double Charging Holes Suitable for Adults and Seniors (Only1 Aid) Shoulder Support Brace either you are in a

either you are in a static activity or strenuous exercise

or neuromuscular disease like dyspnea

Highly Productive

NEVER ENDING BATTERY LIFE - SUPER SPEEDY RECHARGE

and the Other One Is for Power Button and Mode Switch

Coniler Smart Hearing Amplifier with Digital Noise Reduction, Rechargeable Sound Aids with Double Charging Holes Suitable for Adults and Seniors (Only1 Aid) Shoulder Support Brace either you are in aNoise Reduction & Clear Sound Coniler Vivo 202 Hearing Amplifier with Digital Noise Reduction, Adaptive Dual Directional Microphones Work Together to Help You Hear Clearly in Complex Listening Environment, the Microphones Provide Better Background Noise Reduction Compared to Aids with a Single Microphone. Our Amplifier Is Also Equipped with an Advanced Digital Sound Processor Chip Determines Which Direction the Sound Comes from, Allows You to Focus