Bluetooth speaker

Connection: Bluetooth connection

Interface type: USB

Battery capacity: 4000mAh

Frequency range: 100HZ-20KHZ

The signal-to-noise ratio is not less than 75dB

Power supply: built in lithium battery

Extended storage: 32GB

Function: card, waterproof, radio, dustproof, anti fall, voice prompt, call function

Mode of operation: key

Applicable crowd: General

Shell material: plastic

Whether to support APP: is

Speaker adjustment: Keys

3C certificate number: CE certification

Color: white, black