Power supply: built in lithium battery
function: Bluetooth connection, plug wire connection card radio voice prompt
calls package type: Official Standard
playback time: 6 hours
or whether to support the APP: connection: wireless radio, Bluetooth connection card player USB card reader SDT
Bluetooth version: 2.1
Material: plastic
Support U TF card
Receiving distance: 10m and the following speaker adjustment mode: the key
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