Specifications:Designed with a built-in bluetooth-compatible model, it can be used as speaker and player, compatible with various singing app.The built-in clearly audio and vividly sound effect can make you listening and singing anytime and anywhere.Multi-function buttons, easy to switch to different model, adjust volume, sing and play music.Big battery capacity ensures a longer sing time. Quicker charging, long-time lasting.Type: Karaoke MicrophoneMaterial: PlasticBattery Capacity: 4000mAh Battery (Included)Voltage: 110VBluetooth: 2.1 VersionFeatures: Noise Reduction, Easy to Use, Portable, WirelessSize: 28.4cm x 6.6cm x 5.5cm/11.18" x 2.60" x 2.17" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Karaoke Microphone1 x Charging Cable2 x Built-in Batteries1 x Protection Pouch1 x User Manual