Product DescriptionBattery Capacity: 1800mAhPower Supply: 18650 Type Lithium BatteryMaximum Sound Pressure Level: > 115DBFrequency Range: 100Hz - 10KHzOutput Power: 5W Package Includes: 1 x Microphone Product Introduction:Superior Sound Effect - Microphones adopted 3-layers noise reduction, 360 Hi-Fi sound quality and fantastic echo reverberation. Change your voice with 5 voice effects-Monster Voice, Baby Voice, Low Man Voice, Sweet Voice, Original Voice.Easy to Connect - Only connect via Bluetooth, no need to download extra APP. First to connect, just turn on the Bluetooth of mobile phone, then search the Bluetooth named "WS-858", click to be paired and it'll be automatically paired next time.Longer Playing Time - The kids karaoke microphone can continuously play for 6-8 hours when fully charged, will include an USB charging cable, you can plug it into your computer for charging or connect your own charger for charging.Ideal Gift for Children - There're blue, rose gold and pink microphones, suitable for 3-15 year old girls and boys. When your kids open the present, there must be a big smile on their face, and love the unique Christmas birthday gifts toys. Note: 1. Please allow 1-3cm differences due to manual measurement, thanks2. Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same.