Features: 100% brand new and high quality The microphone compatible with smartphone,PC and laptop. The microphone can be used for course teaching,recording,live streaming,office meeting,conference,vocal,interview,vlog,etc. Lavalier microphone is a wearable microphone and used in a wide range of applications. It can effectively shield most of the environmental noise,good recording effect can provide clear and accurate sound. Flater frequency response makes a better sound collection. Package Includes: 1x Microphone 1x Manual Specifications: Materal:Plastic+Metal Color:Black Size:32x38x10mm/1.26x1.5x0.39in Frequency Range:2. 4G Battery Capacity:90mAh Charging Current:5V 100MA Charging Time:About 1hour Working Time:About 10hours Signal Shielding:70dB Transmission Distance:20m/65.62feet Barrier-free Connection Connection Mode:Automatic Connection after power-on note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.