Features: 10hours Long-term endurance. Low power chip.Accompany you to record for a long-time. 20m Connecting distance. Long distance recording.The signal isstable and constantly connected. Intelligent noise reduction. Al-algorithm + noise reduction module, Accurately filter all kinds of noise. Professional 2.4G chip. Nano-core, no lag, low latency, long-term battery life. Truly restore human-voice. Al-algorithm +high-SNR microphone, High degree of reduction without noise. brand new and high quality Specifications: Material:ABS Microphone battery: 80MAH Battery life: 10 hours Signal-to-noise ratio: 64DBM Transmission distance: 20M Sensitivity: -42DB Size:Approx6.5x1.5cm/2.56x0.59inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Lavalier Microphone 1 x Receiver 1 x Manual 1 x Charging Cable