Computer Bluetooth Audio USB Smart Speaker

Product information:
Function: card, radio, voice prompt, call function
Type: Bluetooth speaker
Connection method: Bluetooth connection
Interface type: USB
Frequency response range: 80HZ-180KHZ
Output power: 4w
Signal to noise ratio: ≥80dB
Power supply: built-in lithium battery
Channel: 2+2 stereo + resonance cavity
Expansion storage: 32GB
Bluetooth protocol: 5.0
Number of speakers: 4
Effective distance: 10 meters
Operation mode: button
Color: Bluetooth standard version-black texture (Bluetooth + card + U disk + wired + radio + rechargeable), Bluetooth standard version-ivory white (Bluetooth + card + U disk + wired + radio + rechargeable), knob mini Version-black texture (wired + USB power supply), wood grain knob version-red brown wood (3.5mm audio + USB power supply), wood grain knob Bluetooth version-red palm wood (Bluetooth connection + 3.5mm audio + USB power supply), knob Standard version-black texture (wired + USB power supply), knob standard version-metal gray (wired + USB power supply)
Battery capacity 1200mA

Size Information:
Size: 38.1*6.5*5.6cm

Packing list:
Audio + charging cable + warranty card + certificate + manual *1