Features: 1. Wireless Microphone Gives You Freedom Of Movement For Energetic And Positive Performances 2. Rechargeable Portable Receiver Only Needs A Long Time Of Charging 3. Plug And Play, No Need For Wires, Automatic Frequency Pairing, Handheld Microphone Powered By AA Battery, Receiver Powered By Lithium Rechargeable Battery, Easy To Carry. 4. The Microphone Can Be Connected To Multiple Audio Systems, Including Speakers, Amplifiers, And Wireless Microphone Systems. 5. Does Not Include AA Batteries And 18650 Batteries 1. Material: ABS 2. Signal-To-Noise Ratio: Or Equal To 70db 3. Frequency Response Range: 100KHZ-20KHZ 4. Applicable: Universal Type COLOR: as shown Package Contents: 2 x Microphone 1 x Receiver 1 x Data Cable 2 x Hexagonal Anti- Ring (Random Color Not accepting designation) 2 x Microphone Case (Random Color Not accepting designation) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use 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.