Below are the available bulk discount rates for each individual item when you purchase a certain amount
Amplify sounds from different sources from 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. Also requires parabolic reflector. Kit requires a 9V DC battery. Kit does not include an enclosure.