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A7 Mini Portable Wireless Bluetooth Speaker Stereo Speakerphone AUX TF Music Subwoofer Column USB Speakers for Computer Phones New Wireless Best Bluetooth Speaker Waterproof Portable Outdoor Mini Column Box Loudspeaker Speaker Design for PhoneDescriptionBluetooth version: V5.0 Battery capacity: 600mAh/1000mAh (built in) Endurance time: 8-10 hours Charging time: 1--2 hours Number of speakers: 1 Speaker: 3W or 5W Sound track: 5.1 Frequency range: 2.4GHZ Input sensitivity: 400mV Wireless transmission distance: 10 meters The degree of separation: ¡Ý90dB Frequency response: 70~20KHz (+-3dB) Signal-to-noise ratio: ¡Ý 80dB Playback formats: WAV, MP3, WMA TF maximum support: 32G（not included） Mode of operation: press key Input voltage: DC 5V 2A Interface type: micro USB / AUX / TF card socket / 2.0 USB
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