Sennheiser EK IEM G4-A1 - miniature stereo receiver, 470516 MHz

Radio Frequency (RF) range: 470 - 516 MHz | Maximum temperature: 55°C | Receiver height: 8,2 cm | Headphone outputs 1/8" (3.5 mm) : 1 | Operating frequency type: Ultra High Frequency (UHF) | Harmonic distortion (THD): ≤ 0,9 % | Receiver display: Yes | Number of batteries: 2 | Warnings: Use in accordance with the manufacturer's instructions. | Warnings: Do not open the unit housing. | Warnings: Avoid contact with water. | Receiver type: Bodypack receiver | Receiver depth: 2,4 cm | Receiver width: 6,4 cm | Display type: LCD | Minimum operating temperature: -10 °C | Runtime: 4-6 h | Receiver weight: 125 g | Maximum range: 100 m | Package contents: One Receiver unit | Package contents: Headphones | Package contents: User manual | Package contents: AA battery x 2