Stereo audio amplifier boosts sound up to 50 times. It's great for the-hearing impaired (e.g. when watching TV), as a gadget, science project. It has a volume control and on/off switch. 35 pieces.
Specifications:
Power supply: (3) 1.5V AA battery (not included)
Dimensions: 2.4 x 2.1 x 1.7"
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