Product name: Bluetooth wireless microphone Power supply: 14500 batteries Battery capacity: 800mAh/3.7V Charging power supply: DC-5V/1A Master control scheme: Bluetooth level: V1.0 BT Bluetooth 5.1 Output power: 5W Frequency range: 100HZ-10KHZ Maximum sound pressure level: sound reverberation (If there is a slight difference in appearance color due to different factory batches, it not affect the use) Color:Pink Material:Metal+ABS Package Contents: 1 * Microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.