Clearer sound quality with built-in DSP noise reduction chip. Plug and play design. Reverberation function included. External speaker function with earphone monitoring. Constructed from high-quality ABS materials. Battery capacity: 50mAh lithium battery. Battery life: 4-5 hours. Signal-to-noise ratio: 64dB. Transmission delay: 30ms. Sensitivity: -42dB. Frequency response range: 20Hz-20kHz. Transmission distance: up to 20-30 meters in open space. Types: A - Android interface, B - Apple interface, C - OTG adapter. Color: Pink. Material: ABS. Package Contents: 1 x Wireless Lavalier Microphone Kit 1 x Multi-language instruction manual Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3cm.