Hear conversations up to 300-feet away. Recommend to children 6 year old and older. Please use the product in a spacious and broad place and dont use it with a lot of appliances around. Noise reduction and a parabolic sound collecting dish for better hearing. Other features include on/off switch, 8x monocular, frequency controller, record button, playback button and FREE headphone. (No include SD card, only records for 12 seconds). Powered by a 9-volt battery (Not included) Kindly note: The Headphone is a free gift. The item "Parabolic Microphone Spy Listening Device Nature Observing Ear Sound Amplifier" is in sale since Sunday, March 15, 2020. This item is in the category "Consumer Electronics\Other Consumer Electronics". The seller is "happygo-63" and is located in Irving, Texas.