Hi, I only check the forum periodically so have only just seen this ... I am a teacher, and I have a microphone to help in the classroom. It is at school and I am at home, so I can't give you the make, but the school bought it from Connevans at www.DeafEquipment.co.uk
, who were incredibly helpful. It was about £150.
It has a pack to wear over your shoulder and either a little hand held mike or a headset,all very easy to use. A lapel mike doesn't work with it as you get too much feedback. It is light and doesn't need recharging particularly often.