Technical Specifications; Power Requirements - Clarity Alto PLUS Manual De Uso

Amplified dB Level: 50dB/124 dBSPL
Tone control range: From 300 to 3000Hz
Dimensions:
Size: 10 . 4 " x 8" x 4 . 4 " (26 . 4 cm X 20 .5cm x 11 .2cm)
Weight: 2 . 7 lbs (1 .23kg)

Power Requirements:

DC Adapter: 9VDC, 800 mA
Batteries: 4 AA alkaline batteries (not included)
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TECHNICAL SPECIFICATIONS