Beyerdynamic IRIS Operating Instructions Manual page 48

IRIS – Technical Specifications
48
De-emphasis. . . . . . . . . . . . . . . . . . . . . . 150 ms
Signal/noise ratio . . . . . . . . . . . . . . . . . . > 80 dBA
Supply voltage . . . . . . . . . . . . . . . . . . . . 3.7 to 4.2 V, nominal 3 V
Power consumption
Normal (at 3 V) . . . . . . . . . . . . . . . . . . . . 50 mA (32 Ohm headphones)
Headphones not connected . . . . . . . . . . 0 mA
Operating time
Battery operation . . . . . . . . . . . . . . . . . . 10 hours
Dimensions (H x W x D) . . . . . . . . . . . . . 156 x 56 x 18 mm
Weight (incl. batteries) . . . . . . . . . . . . . . 150 g
Colour . . . . . . . . . . . . . . . . . . . . . . . . . . Grey