Sennheiser AVX-ME2 SET - digital wireless set with lavalier mic and mini transmitter fully automatic

Microphone type: Lavalier | Battery technology: Lithium-Ion (Li-Ion) | Microphone direction type: Omnidirectional | Frequency range: 20 - 20000 Hz | Package contents: Battery x 2 | Housing material: Metal | Product type: Wireless microphone system | Weight: 87 g | Battery lifetime: 4 h | Package contents: Transmitter x 1 | Package contents: Adapter Cable x 1 | Package contents: Adapter | Package contents: One Receiver unit | Battery lifetime: 15 h | Package contents: Case | Package contents: Power supply | Transducer type: Electret | Package contents: Microphone | Warnings: Use in accordance with the manufacturer's instructions. | Harmonic distortion (THD): 0,1% | Warnings: Do not open the unit housing. | Warnings: Avoid contact with water.