Modulation: FM
Antenna: Built-in
System: Non-diversity, one channel
Carrier frequency: UHF 863.000-865.000 MHz (16 channels)
Frequency stability: ±0.005 %
Tone signal: 32.768 kHz
Selectivity: >55 dB
Dynamic range: >94 dB
Audio output: 3.5 mm stereo jack
Audio output level: 100 mW
Power supply: 2 x 1.5 V mignon batteries (type AA)
Current consumption: approx. 130 mA, ±5 mA
Battery life: approx. 5 hours, depending on the volume
Dimensions (W x D x H): 165 x 23 x 64 mm
In-earphones
Transducer type: Dynamic
Impedance: 32 ohms ±15 %
Sensitivity: 94 dB ±3 dB
Cable length: 1.2 m
Connection: via 3.5 mm stereo plug
Frequency band: UHF 863 - 865 MHz
Weight: 0,1 kg
Frequency range: 20 - 20000 Hz
Height: 6,4 cm
Depth: 2,3 cm
Width: 16,5 cm 

Optional pocket receiver for IEM-500
-Multifrequency in-ear monitoring receiver set with mini earphones, supplied in a practical transport case
-Replacement or extension for the matching in-ear monitoring system IEM-500
-Operation in the low-interference UHF band (863-865 MHz) with 16 frequencies selectable
-Pilot tone technology (PLL)
-Operation range with line of sight approx. 50 meters
-Adjustable earphones output
-Balance (left, right) adjustable
-LCD for battery capacity, receiving frequency, and RF signal
-High frequency boost selectable
-Lock function for prevents undesired changes to settings
-Belt clip
-Power supply via included 2 x 1.5 V mignon batteries (type AA)
-License-free and approved in the EU
-Mute function: On/off/mute switch