Product Description Single-ear D-shape mono earphone designed for group communication systems and professional audio use.
Compatible with devices featuring a 3.5mm mono audio jack.
Commonly used in museum guide systems, tour guide receivers, language interpretation equipment, hospitals, and corporate training environments.

The earphone includes a 27mm speaker with 110dB sensitivity for reliable voice transmission.
The 0.9-meter cable provides flexibility for stationary or mobile applications.
Lightweight and durable, suitable for large-volume procurement and multi-user distribution.

Specifications
Speaker Diameter: Ø27mm
Sensitivity: 110dB S.P.L at 1kHz
Impedance: 32Ω
Frequency Response: 20Hz–20kHz
Cable Length: 0.9 meters
Connector Type: Ø3.5mm mono jack
Design: Single-ear D-shape ear-hook
Waterproof Rating: IPX-0
Packing: 1 piece per OPP bag
Origin: China

Applications
Tour guide systems
Museum audio receivers
Conference and seminar interpretation systems
School or educational training
Hospital communication tools
Airline or transportation announcements
Audio playback on tablets, MP3 players, DVD devices, and more