• Product Dimensions: 5 x 4 x 3.4 inches
• Item Weight: 200 gm
• Manufacturer recommended age: 8 years and up
• Batteries: 3 AAA batteries required.
• SpyX's signature acoustic secret agent device is fun for your child to play with.
• Build your own listening device to spy with this spy kit.
• The kit includes a microphone, battery unit, volume button, listening unit, on/off switch, and earphone.
• After each electrical block is connected to the base and wires are connected, turn on the switch, place the earphone on your ear, and point the microphone toward the sound source.
• Develop children's skills and provide fun play for your child.
• Adjust the volume knob to hear the secrets.
• Colorful wires and springs help you build your acoustic hearing aid and learn all the theories easily.