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
