Polsen OLM-20 Dual Omnidirectional Lavalier Microphone Dual OLM-10 Omnidirectional Mic Capsules; Single 1/8" Stereo Connector Each Mic Routes to Discrete Channel; Left/Right Channel Indicated on Mics 13.5' Cable with 10' Between Mics; Battery Powered Works with Most 1/8" Recording Devices; Includes 2 Tie Clips & Foam Windscreens Includes LR44 Battery