Music Mini Bluetooth Speaker

Product name: Bluetooth speaker
Product model: A9
Interface type: USB
Effective distance: about 10m / 32.81ft.
Signal-to-noise ratio: 85DB
Distortion: ≤ 0.5%
Main Material: ABS
Bluetooth version: V2.1
Power supply mode: Built-in lithium battery
Battery capacity: DC 3.7V /
300mAh Charging voltage: DC 5.0V / 1A
Charging time: 1 hour
Output power: 3W
Driver Unit: Φ 45 * 1 PC
Frequency Response: 100Hz-20KHz
Play Time: 1 ~ 2 Hours (depending on the song type)
Extended storage: 16GB (No TF card)
Dimension (W x H xD): about 50 * 50 * 60mm / 1.97 * 1.97 * 2.36in Weight: about 0.13kg

Function: Bluetooth, TF, AUX IN 3.5, USB