1 a wasting away of the body, as from poor nutrition, nerve damage, or disuse. 2  to undergo atrophy; wither; degenerate:His crippled leg began to atrophy with no exercise. 3  to become weakened; decline:Industry atrophied in bad economic times.
Voice Amplifiers / Long Range Listening Devices. Listening devices can be utilized for a variety of purposes including listening through a wall, listening from a distance or enjoying your favorite animals in the wild. More complex systems contain an audio transmitter and receiver.
Tuned for Emotion. 1  Connect via Class 1 BluetoothÂ® with your device for wireless listening. 2  The award-winning sound and design youâve come to love from Beats. 3  Up to 40 hours of battery life for multi-day use.  With Fast Fuel, 5 minutes of charging gives you 3 hours of playback when battery is low.