Packing: 50pcs

Specifications: single speaker

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Bluetooth Speaker with Sound Effect, Card Subwoofer and Colorful Light Color:Black Packing: 50pcsProduct information: Function: insert card, radio, voice prompt, call function Certificate type: ROHS, CE certification Type: Bluetooth speaker Connection method: Bluetooth connection Interface type: USB Frequency response range: 100Hz 20KHz Output power: 8W*1 Signal to noise ratio: 75dB Power supply mode: built in lithium battery Channel: 2. 1 Play time: 3~5 hours Expansion storage: 32GB Bluetooth protocol: 5. 0 Number of speakers: 2 Effective