Built-in 4 Effects: This portable guitar amplifier is designed for electric guitars and features four built-in effects—clean, distortion, overdrive, and reverb—to support a variety of playing styles and practice needs. Compact and Portable: This mini guitar amplifier is ideal for travel and on-the-go practice. Its small size makes it easy to carry in a backpack or luggage. Despite its compact design, it delivers sufficient volume for personal practice with a 5W speaker. Plug and Play: Equipped with a 6.35mm input jack, this amplifier offers simple connectivity without the need for complex wiring. Its lightweight build allows it to be easily attached to your guitar, enabling instant playability whenever and wherever you want. Bluetooth Function: The amplifier includes a Bluetooth audio function that allows wireless connection to smartphones or other Bluetooth-enabled devices for playing backing tracks or music. Please note that this feature does not support connection to Bluetooth headphones or external Bluetooth speakers. Rechargeable Design: The amplifier is equipped with a built-in rechargeable battery, providing approximately 6 hours of continuous use when fully charged. This eliminates the need for disposable batteries and enables convenient outdoor use. We recommend using a 5V 2A charger. Avoid using chargers with voltage exceeding 5V, as they may damage the device or create safety hazards. Color: Black Material: ABS Package Contents: 1 x Mini Electric Guitar Amplifier 1 x USB Charging Cable 1 x English Instruction Manual Note: The package includes only the items listed above. Other accessories or products shown in images are not included. Slight variations in product appearance may occur due to different manufacturing batches, but these do not affect functionality. Differences in color may appear due to lighting conditions and screen display settings. Measurement tolerance is +/- 1-3 cm.