I purchased this January 2012.

　　On Amazon for now $154.

　　Comes in original box with original instruction manual and ALL items included.

　　What's in the Box-

　　WM-PRO transmitter, WR-PRO receiver, EX-503 lapel microphone, EX-413 handheld microphone, a camera shoe mount, a monaural earphone, and a user's manual.

　　Product Dimensions: 11.5 x 6.2 x 2.6 inches ; 12 ounces

　　Shipping Weight: 1 pounds (View shipping rates and policies)

　　Shipping: This item is also available for shipping to select countries outside the U.S.

　　ASIN: B00006JPD8

　　Item model number: WMSPRO

　　Batteries: 1 AAA batteries required.

　　Average Customer Review: 3.7 out of 5 stars out of 99 reviews on Amazon.

　　Product Description

　　Azden's WMS-PRO wireless microphone system offers untethered convenience and clear FM transmission from compact, unobtrusive components. The system consists of Azden's WM-PRO transmitter, WR-PRO receiver, EX-503 clip-on electret microphone, and EX-413 handheld microphone. Affix the electret microphone to your lapel or grasp the handheld mic, plug the mic cord into the transmitter, and away you go.

　　The transmitter and receiver operate in the VHF band, where interference is very low. Choose between 169.445 MHz and 170.245 MHz for the clearest transmission and reception. The transmitter and receiver each operates for about 10 continuous hours on a single 9V battery (not included).

　　The receiver comes with an attached shoe mount for mounting a video camera, which may be easily removed using a Philips-head screwdriver. You can also attach the receiver with the supplied Velcro strip. The receiver includes an output jack and a telescopic antenna. Plug the supplied earphone into the jack to monitor your recording, or plug the earphone into a camera's earphone jack.

　　The system conforms to Part 90 of FCC rules, and it's not to be used in high temperatures, high humidity, or near a broadcasting station, airport, or on an airplane.

　　The "all-time" best selling wireless microphone for videography. This versatile system consists of the WM-PRO belt-pack transmitter 2 plug-in electret condenser microphones, a lavalier (EX-503) and handheld (EX-413) and the WR-PRO receiver which comes with both shoe-mount and hook and loop fastener. All receivers and transmitters in the "PRO" Series are on the same 2 frequencies (169.445MHz and 170.245MHz).