Feature: 1. Chips used in audio devices have built-in low-power alert and automatic shutdown functions. 2. The structure is made of high-strength ABS material, offering durability and a sleek design. 3. Enhanced wear resistance, strong U-band frequency penetration, stable signal transmission, and clear sound output. Product Name: Wireless Headphone Microphone Working Time: Up to 2 hours Charging Time: 2 hours Bluetooth Version: 5.0 Transmission Distance: 10 meters Microphone Sensitivity: 53 1 dB Sampling Rate: 48 kHz The 2.4G wireless microphone is suitable for teaching, sound amplification, stage performances, lectures, audio recording, and use with Bluetooth-enabled devices such as smartphones, tablets, and computers. Set Configuration: 1 x 2 or 1 x 1 (depending on model) Material: Plastic Color: Black Package Contents: 1 x Wireless Microphone Set Note: Other items not included. Color may vary slightly due to lighting and display differences. Measurement tolerance: 13 cm.