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Battery Testing: The tester typically has slots or compartments where you can insert the hearing aid battery
8 Standard deviation dB 2
providing a gradual and constant pressure balance between the air and your middle ear
drying temperature range about 50 °C ±3 °C
On/Off Switch (no volume or pitch control)
Pocketalker® Ultra Personal Amplifier Battery Testing: The tester typicallyPocketalker Ultra System amplifies sounds closest to the listener while reducing background noise. Ideal for one on one conversation, small group and television listening, or conversing in the car. Use with or without hearing aids. Simply plug in your earpiece, position the microphone near the preferred sound, adjust volume to your comfort and start listening. One on one conversations Small group listening Television listening Conversations in the car