Bluetooth High Sound Quality Mini Speaker Amplifier Portable Subwoofer (Can Plug U Disk)

Product information:
Function: insert card, call function
Connection method: Bluetooth connection
Power supply mode: built-in lithium battery
Display: None
Shell material: metal
Whether to support APP: Yes
Support format: U disk
Speaker adjustment method: button
Appearance size: 74x74x123mm
Product weight: 350g (KG)
Specification: official standard
Power supply mode: USB

colour:
A: Red + 8G built-in song memory card + audio cable,
B: Green + 8G built-in song memory card + audio cable,
C: Blue + 8G built-in song memory card + audio cable,
D: Cyan + 8G built-in song memory card + audio cable,
E: Black + 16G U disk comes with songs + audio cable,
F: Red +16G U disk comes with songs + audio cable,
G: Green + 16G U disk comes with songs + audio cable,
H: Blue + 16G U disk comes with songs + audio cable,
I: Cyan + 16G U disk comes with songs + audio cable,
J: black,
K: red,
L: green,
M: Cyan,
N: blue,
O: Pure black + black [TWS series matching combination],
P: Black + 8G built-in song memory card + audio cable

Packing list: Bluetooth speaker x1