Mobile Phone Loudspeaker, Speaker Phone Case

iPhone speaker, mobile phone speaker, loudspeaker, phone speaker caseSpecifications: Wireless connection and Bluetooth transmission, to rid itself of the shackles of the line, to save music player phone power consumption, TF card, computer speakers feature a lot, stereo, listening to a sense of transparent, flexible, fashion portable, mobile phone, iPad perfect match! Features: Power: 2W. Frequency response: 90Hz-20kHz. Sensitivity: 80dB± 2dB. Speaker: Φ 40mm/4Ω . Signal-to-noise ratio: 80dB. Distortion: 0.3%. Battery: Built-in lithium battery 3.7V 500mA. Bluetooth: Bluetooth 2.0+EDR specification, support A2DP V1.2.