Product Features: : 1. Bluetooth speaker function, three playback modes: Bluetooth, line in, TF card2. Microphone function: After Bluetooth connection, open the singing APP and sing your song anytime, anywhere. It can be used for conference hosting, friends gathering, stage performance3. Ear return function, can be linked to external high-power equipment to amplify the sound effect.Treble and bass effect adjustment function, to debug the effect you want4. High-quality materials, oxidized color, high quality display.Battery 2000mAh, playback to 5 hours5. Dual speaker design, high-quality sound quality brings customers super enjoyment.Support one-key cancellation of sound, easily switch between singing and pure accompanimentDescriptionProduct name: TWS BT microphonePickup: CondenserOutput power: 8wLoudspeaker: 52mm 4/ 8wFrequency response: 100Hz-18KHzSupport mode: BT/Line inBT: 5.0+Charging Voltage: 5V/1ASignal-to-Noise Ratio: 80dBOperation frequency: 2.402G-2.480GHzBattery capacity: 2000mAh/3.7vTWS interconnection: support interconnected duet singing, listen to to enjoy stereo sound effects, and easily enjoy the time of double Material: plasticcolour: blackPackage Contents: 1 x Wireless 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.