1Advanced speaker and perfect fit: Speakers adopt advanced 3215% at 1KHZ, loud and thick. Suitable for Xiaomi 1S/2S intercom. 2HIGH FLEXIBILITY AND TOUGHNESS: The wire adopts cold resistant PU tensile wire, with high flexibility and toughness. 3HIGH STRENGTH AND LONG SERVICE LIFE: U94 PTT part adopts high strength PTT, can continue to press 30,000 to 50,000 times. 4UNIQUE CLIP DESIGN: The U94 PTT comes with clips that can be attached to clothes or belts. Button activates PTT (one button on) device. 5EXQUISITE AND NOISE REDUCTION: Fine workman, comfortable feel, high sensitivity, noise reduction design, even in noisy environment can provide clear sound quality. Item Type: Two Way Radio Speaker Material: PU+PTT Color: Black Horn Specifications: Sound Pressure Rating: 1083dB at 1KHZ 1mW Rated Power: 50mW Maximum Power: 2W Speaker Impedance: 3215% at 1KHZ Microphone Specifications Sensitivity: -315dB at 1kHz 0dB=1V/0.316G Output Impedance: 120015% at 1KHZ Applicable: For Xiaomi1S/2Sintercom 1 x U94 PTT 1 xTwoWayRadioSpeaker