team offers 30 days return or replacement quality warranty & lifetime technical supports. Please contact us freely if you need anyfurhter assistance. Product Features: Support Bluetooth: Use mobile phone Bluetooth to synchronize, avoid music and inconsistent pronunciation, comfortable. Support MP3: There is a USB input port at the bottom of the microphone, which supports MP3 format music playback, and the function is extremely powerful. Support Recording: Bring the microphone - headphone connector cord and link mobile phone song APP to record the recording function. 1200mAh battery up to 6 hours of singing, enjoy the smart phone APP KTV karaoke effect. Intelligent Compatibility: Compatible with mobile phones, computers and tablets; Support many K software. Multi-purpose: Bluetooth speakers, karaoke singing, car audio, music recording, interviews, podcasts and so on. Product Specification: Type: Wireless Bluetooth Microphone Material: ABS shell, Aluminum alloy handle, Steel mesh cover Color: Black/Rose Gold/Gold Frequency Range: 100~ 10khz Input Voltage: 5V Battery Capacity: 1200mA Connection Mode: Mobile phone Bluetooth Applicable Places: Family, KTV, outdoor, car, stage, etc. Package Includes: 1 x Wireless Bluetooth Microphone 1 x USB Power Cable 1 x User Manual 4 in 1 Portable Hand-held Wireless Microphone: used as Karaoke Singing, Bluetooth Speaker, Loudspeaker, Recorder 2 Ways Connection: 3.5mm Audio Jack & Bluetooth Connection Provide Quality Audio Sound & High compatibility w/ Professional audio processor and tuning system Long Palying Time: Built-in 1200mAh rechargeable Battery can last 6Hrs of singing after fully charge Offer One Year Warranty, Free Return & Exchange