Modern Portable Bluetooth Speaker Card Wireless Subwoofer Outdoor Bluetooth Sound Small Steel Cannon Bluetooth Speaker High Configuration

Connection method: Bluetooth connection
Frequency response range: 100HZ-20KHZ
Signal to noise ratio: ≥ 75dB
Number of speakers: 2
Effective distance: 10 meters
Box material: plastic
Power mode: USB
Waterproof grade: non waterproof
Bluetooth version: 5.0
Shell technology: plastic
Built in battery: Built in battery