K3 Smart Bluetooth SpeakerOutput power: 3W Signal to noise ratio: 90dB Power supply mode: built in lithium battery Channel: 2. 1 Playing time: 6 hours Expansion storage: support expansion Bluetooth protocol: 5. 0 Number of speakers: 1 Effective distance: 10 meters Function: card, radio, dustproof, anti drop, voice prompt Operation mode: button Applicable people: general
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