Wireless Speaker BT 4.0--Black

Specification:
Material: ABS
Features: Bluetooth audio input, Bluetooth hands-free calling, AUX, TF card, U disk, FM
Bluetooth version: Bluetooth 4.0
TF card music playback mode: MP3
Working frequency: 2402-2480MHz
Effective power: 3W
Speaker unit: ∮45MM
Frequency: 90Hz-20KHz
Audio interface: 3.5MM
Resistance: 4Ω
Battery: Built-in 300mah lithium battery
Charging interface: micro USB
Play time: 2-3 hours (depending on play time)
Product size: diameter 6.5cm height 7cm