Wireless With Mobile Phone Holder Power Bank Bluetooth Speaker

Produce information Function: insert card, voice prompt, call function Type: Bluetooth speaker Place of Origin: Shenzhen Connection method: Bluetooth connection Interface type: card reader Frequency response range: 40Hz-20KHz Output power: below 100W Signal to noise ratio: ≥70db Power supply mode: built-in lithium battery Channel: Mono Play time: 12 hours Extended storage: not supported Bluetooth protocol: 5.0 Number of speakers: 2 Effective distance: 12 meters Operation mode: button Pla