Plug and play, no complicated operations required Supports any 3.5mm plug model, no need to purchase additional adapters It is recommended to charge directly after use to facilitate the next use, and cannot be charged while using Instruction: 1. First, press and hold for 3 seconds to turn on the device, and insert the audio head of the receiver into the audio hole of the mobile phone or speaker. The green light flashes to indicate that it is in the waiting state; 2. Press and hold the power button of the microphone to turn it on, and the red and green lights flash to indicate that it is in a waiting state; 3. The green light of the receiver is always on, and the green light of the transmitter is always on, indicating that the pairing is successful. Specification: Type: Lavalier Microphone Transducer: Dynamic microphone Use: Home/Studio Polarity Mode: Unidirectional Communication: Wireless Charging time: about 1 hour Battery capacity: 220mAh Charging current: 5V 100mA Battery life: about 15 hours Connection method: automatic pairing when power on Transmission distance: about 20 meters Features: Noise Cancellation Other: Pause Mode Plug: 3.5mm Note: For OPPO/for VIVO/for IQOO/for REALME brand mobile phones need to search for "OTG" in the settings and turn on the OTG power to use normally.