Features: -The wireless lavalier microphone system adopts 2.4G wireless signal transmission, low noise and low latency, supports stable and effective 40ft transmission range.  -The transmitter and receiver have built-in rechargeable batteries and support 6-8 hours of operation after full charge. Comes with 2 USB charging cables, you can charge the transmitter and receiver simultaneously.  -Metal mini clips allow you to attach the microphone and transmitter to your neck, tie or pocket easily. The small size and lightweight design ensures that you hardly notice that the microphone and transmitter are there.  -Comes with 3.5mm TRRS plug adapter, the receiver can be connected to smartphone, PC, laptop, tablet, camera and speaker with 3.5mm interface for video recording or talking outdoors.  -Wide applications, suitable for video recording, live streaming, online chat, singing, speaking, lecturing, classroom teaching, tour guides, etc. Includes a bag for convenient storage and transport.     Specifications: Power supply:Built-in lithium battery;  Charging voltage:5V DC;  colour:black;  Material:plastic;  size:58.5x29mm;     Package Contents: 1 * V3 Wireless Microphone;  1 * Manual