It is comfortable for you to wear this wireless microphone because it is lightweight. This wireless microphone uses large-capacity battery, which features long standby time. Adopting 2.4G wireless technology and intelligent noise reduction, this microphone can bring you stable and anti-interference transmission as well as high-fidelity and lossless sound effect. It is constructed of ABS material. Featured with automatic power-off, this wireless microphone is energy-saving. The length of this wireless microphone is about 30cm. This wireless microphone is suitable for teaching training, venue speech, tour guide and other decives with 3.5mm MIC interface. Item Name: Microphone Material: ABS Frequency Range: 16bit-16kHz Frequency Response: 100Hz-15KHz Modulation Method: GFSK Transmit Power Consumption: Less Than 15mA Power Consumption: Less Than 10mA Transmission Distance: 50m Power Supply Mode: Built-in Rechargeable 3.7V 120mAh Battery Battery Life: 5-6H Features: Intelligent Noise Cancelling, High Fidelity, Comfortable Size Details: Length: 30cm/11.81" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Transmitter 1 x Receiver 1 x 3.5mm Adapter 1 x USB Charging Cable 1 x User Manual