ANLEONMTG-400 wireless tour guide language interpretation system crystal clear audio Wireless Lavalier Lapel Microphone System (1 Transmitter -1 Receiver)

I am a Québec City tour guide. I orderred 12 MTG-200 receivers and 2 MTG-200 transmitters. The MTG-200 had not been reviewed but I took a chance on it because I assumed it was a newer, improved, version of the MTG-100, which had positive reviews (MTG-100 has an LCD (frequency/volume display that is easier to read in sunshine).The MTG-200 products arrived as advertised: simple plastic cases (not flimsy though), nice simple ribbon necklace, as well as a pocket clip. Everything has worked perfectly over the last 2 years and customers rave about the sound quality. The after sale service is fantastic! I wrote to the Seller to mention that the ear buds fell appart almost instantaneous (most every kind I've ever tried do that) and about 5 minutes later I got an email saying replacement buds were on their way.However, the MTG-200 is not perfect. I advised the manufacturer that the simplicity of the 200 model left some things to be desired: lights instead ofan LCD display to indicate off/on and which channel is in us are hard to see in the sunlight. On/off and channel selection buttons are not marked so customers can't figure out how to use them. I am happy to see that on the MTG-300 the manufacturer heeded all my advice. The new model 300 has obviously resolved those minor operating issues by adding an led screen, repositioning and better labelling operating buttons. The MTG 300 must be close to perfection!To say the least I am impressed with ANLEON products and their service - she she!