Check the listing for details. Stealth Pen Microphone, Surveillance Microphone for Discreet Covert Recordings. Condition: New. Listed at 9.82 USD. Surveillance Microphone, Covert Pen Stealth Microphone, for situations requiring not attracting attention Works with Digital Recorders, Laptops, Computers, Camcorders, Minidisc & Cassette Recorders, Portable DAT & digital MP3 Recorders, or other devices equipped with "plug in power" Microphone input. Note: does not work with Smartphones. Small size for stealthy discreet recordings. Ideal for professional reporters, journalists, private investigators, law enforcement, students, lecturers, interviewers, or situations requiring not attracting attention. High sensitivity microphone, will produce clear sound recordings even under adverse conditions. Has 3.5mm (1/8") TRS stereo plug, 5-feet cable, works with either stereo or mono devices, does not require batteries. Require “plug in power” microphone input, fits 3.5mm Jack. Each Microphone is thoroughly tested before shipping, if any problem arises please contact us, we will do our best to resolve any issue. Any Question will be answered promptly, please use the Ebay Messaging System to contact us. For your convenience we accept payments via Paypal. We ship within 24 hours after receiving order/payment.