Support various smart phones of Apple and Android systems. Speaker power: 4Ω 5W Signal to noise ratio: greater or equal to 85dB Frequency response range: 150~20KHZ. Audio interface: 3.5mm stereo headphone plug. Charging time: 3 to 5 hours, the light will turn off when fully charged and the light will turn on in blue. Play time: about 5 hours with a full-charge intermediate volume. Power adapter requirements: Input voltage: 5V, current 1A/2A. The full-frequency three-way large-diaphragm speaker sounds simultaneously, perfect pickup and intelligent noise reduction. 5.0 Bluetooth reverb adjustment, magic sound change, back-to-ear monitoring, intelligent sound TV karaoke TF card playback Apple/Android compatible One-key switch between sound and accompaniment colour:gold/gray Material:ABS Package Contents: 1 x K8 Musical Microphone Only the above package content, other products are not included. Note: Light shooting 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.