It's a good device, but:
1) You can't see the battery status, so it may suddenly shut down without warning.
2) The USB charging cable is extremely short (just over 30 cm).
3) No matter how professional your USB cable is, the device can only be charged with the tiny cable provided. No other cable can be used, even if it's USB A.
4) There's no way to equalize it and at high volumes it distorts a bit.
It looks nice and is practical due to its size, but otherwise, I would think twice about it.
Let...