Description: 2.4G wireless: The mini microphone features 2.4G wireless technology, which enables low latency transmission and stable connection. Automatic: The wireless mics feature automatic connection, which spares your trouble of pairing over and over again. Portable: The mini mic is built with a charging case, convenient for users to carry and store in the pocket, suitable for schools, offices, homes, studios, etc. Wide applications: The wireless microphone is suitable for interviews, meetings, video recording, live streaming, presentation, etc. Compatibility: The wireless microphone is designed with a receiver, which is compatible with most mobile phones, laptops, tablets, etc. Specification: Size: Approx. 60x13x10mm/2.36x0.51x0.39 inch. Track: 5.1. Input Voltage: 220V. Battery Capacity: 300mAh~500mAh (Built-in, Rechargeable). Battery Life: 8-12 Hours. SNR: ≥85dB. Frequency Response Range: 20Hz-20kHz. Feature: Type 1: 1 Receiver with 1 Mic, Type-C. Type 2: 1 Receiver with 1 Mic, Replacement for iPhone. Type 3: 1 Receiver with 2 Mics, Type-C. Type 4: 1 Receiver with 2 Mics, Replacement for iPhone. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: Type 1: 1 Piece Microphone (with 1 Piece Receiver, 1 Piece Charging Cable, 1 Piece Charging Case, 1 Piece User Manual). Type 2: 2 Pieces Microphones (with 1 Piece Receiver, 1 Piece Charging Cable, 1 Piece Charging Case, 1 Piece User Manual).