Bulk Pack of 10 - As Low As $16.00 Per Kit!
Amplify sounds from different sources (far away, birds, conversations. Add a parabolic reflector and hear blocks away. This kit contains all parts necessary to build an ultra sensitive listening device. Use a funnel or design your own reflective parabolic dish.
Requires a 9V battery and a parabolic reflector. Does not include enclosure.
