VELLEMAN MK136 SUPER STEREO EAR

Stereo audio amplifier boosts sound 50 times. Great for the-hearing impaired (e.g. when watching TV), as a gadget, science project, … With volume control and on/off switch.

Specifications

• power supply: 3 1.5V AA battery (not included)
• dimensions: 2.4 x 2.1 x 1.7"