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Bosch LBB4540/04

• Audio signal automatically muted when signal is too low, ensuring that the user receives only high quality audio

• Can be used with disposable batteries (2x AA alkaline batteries, not included) or environmentally-friendly NiMH rechargeable battery pack LBB 4550/00, (not included)

• No power used when headphone is disconnected

• Clip for easy wearing

• Measurement mode for easy checking of radiator coverage

• Attractive and stylish design

• Up to 200 hours operation with alkaline batteries

• Up to 75 hours operation with battery pack

• Recharges from empty to full capacity within 1 hour and 45 minutes

IR irradiance level4 mW/m2 per carrier
Angle of half sensitivity± 50°
Headphone output level at 2.4 V450 mVrms (speech at maximum volume, 32 ohm headphone)
Headphone output frequency range20 Hz to 20 kHz
Headphone output impedance32 ohm to 2 kohm
Max. signal-to-noise ratio80 dB(A)
Supply voltage1.8 to 3.6 V, nominal 2.4 V
Power consumption at 2.4 V (battery voltage)15 mA (speech at maximum volume, 32 ohm headphone)
Power consumption (standby)< 1 mA
Dimensions (H x W x D)155 x 45 x 30 mm
excluding battery75 g
including battery125 g
Colorcharcoal with silver


Additional information
Weight0.075 kg
Dimensions15.5 × 4.5 × 3 cm
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