Built-in 4 Effects: This portable guitar amplifier is designed for electric guitars and features four built-in effects—clean, distortion, overdrive, and reverb—ideal for daily practice. Compact and Portable: This mini guitar amplifier is a convenient companion for travel or 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 practice sessions with a 5W speaker. Plug and Play: Equipped with a 6.35mm input jack, the amplifier offers easy connectivity without complicated wiring, providing greater mobility. The design allows it to be attached directly to your guitar for immediate use—just plug in and play. Bluetooth Functionality: This mini amplifier includes Bluetooth technology, enabling wireless connection to smartphones or other compatible devices. Play along with your favorite tracks from your mobile device. Note: This amplifier does not support connection to Bluetooth headphones or external Bluetooth speakers. Rechargeable Design: The amplifier features a built-in rechargeable battery, offering approximately 6 hours of continuous use when fully charged. This eliminates the need for frequent battery replacements and allows for convenient outdoor use without reliance on external power sources. We recommend using a 5V 2A charger. Avoid chargers with voltage exceeding 5V, as they may damage the device or cause safety hazards. (Note: Product appearance may vary slightly between batches, but this does not affect performance.) Color: Black Material: ABS Package Contents: 1 x Mini Electric Guitar Amplifier 1 x USB Charging Cable 1 x English Instruction Manual Please note: The actual product color may vary slightly due to lighting conditions and display settings. Measurement tolerance: ±1–3 cm.