Thank you for viewing. I purchased this about two years ago, but I'm selling it because I haven't used it much. Operation has been confirmed. I am not accepting price negotiations, so please buy it immediately. Please understand that the product is a used item, and please purchase it with that in mind. We do not accept claims or returns after purchase, so please understand. FLY guitar amplifier with Bluetooth function, compact and convenient to carry. - Model Name: FLY - Bluetooth Function: Yes - Control Knobs: GAIN, VOLUME, EQ, DELAY, LEVEL, ISF, TIME - Input Terminals: INPUT, MP3, EFX OUT, PHONES - Product Type: Guitar Amplifier