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

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