Sony ECM-CS10 Tie-Clip-Style Omnidirectional Business Microphone

Technical Details
Lavalier styling -- includes a clip to attach to clothing; permits convenient, hands-free recording
Small, inconspicuous -- makes the recording process more natural and less obtrusive
Integrated clip for maximum simplicity & ease of use
Omni-directional pattern -- picks up voices from all directions; ideal for meetings and lectures
2-way power supply -- plug-in power with select Sony portable recorders -- battery power for use with all other recorders (not supplied)