and

This is a very high-quality broadcast spec lav microphone intended for use with Sony professional UWP type wireless mic systems such as the UTX-B40 Bodypack Transmitter. You can’t use this with other brands and other systems as the pin arrangement on the mic is not standard. I will check with you before shipping to make sure this is OK.

This also includes the Sony accessory kit for the ECM-77 mics, which includes two clips and a selection of spare pop filters for the mic, as these could be easily lost in the field.

I am offloading this because I sold the wireless mic system and this is not compatible with my new system. It was only tested and then stored. 

The mic is currently £276 at CVP, including VAT, the accessory kit is a ridiculous £186, but that’s life. Combined price new is £462. I will sell the lot for £200, no haggling please, this is a bargain.

The blurb, shamelessly copied and pasted from CVP website:

The ECM-77 microphone is designed for high quality voice pick-up with its voice emphasis curve, extended frequency response, and sensitivity. Its minute size, with a diameter of only 5.6mm and length of 12.5mm, makes it a compact and convenient option for voice recording.

This lapel microphone is also ready for wireless systems, as it is compatible with the Sony Freedom WRT-805 wireless transmitter. Its hands-free design allows presenters to focus on their performance, while also creating a professional image due to its widespread use in TV production. The ECM-77 is easy to use and familiar to most sound professionals, making it an essential tool for achieving excellent voice recording quality.