Wireless Microphone Portable Bluetooth Mini Speaker

Specifications:  ◆ Supports various smart phones of IOS and Android systems. ◆ Signal-to-noise ratio: ≥85dB ◆ Frequency range: 150 ～ 20KHZ ◆ Audio source interface: 3.5mm stereo headphone plug ◆ Charging time: 3 ~ 5 hours ◆ Play time: about 3 hours when fully charged  ◆ Power adapter requirements: input voltage: 220V output voltage: 5V current 1A / 2A