Feature: 1. Portable BT Guitar Speaker Amplifier: This compact practice bass amplifier features a 10W subwoofer, providing powerful bass in a small size for convenient portability. 2. Wireless Connection: You can plug in your headset to the bass amplifier for your favorite songs without disturbing your neighbors. 3. Black Appearance: Featuring a simple black exterior, this bass amplifier not only looks stylish but also delivers powerful sound with accuracy and clarity. 4. Long Lasting Power: With a 3.7V 2000mAh rechargeable lithium battery (built in), the bass amplifier can last up to 4 hours on a full charge, allowing for extended use. 5. Easy Connectivity: The amplifier features a USB C interface for power supply, and a 6.35mm universal input jack for plug and play convenience. Specification: Item Type: Bass Amplifier Material: ABS, Circuit Board Color: Black Output Power: 10W Battery: 3.7V Rechargeable Lithium Battery (2000mAh) (Battery included) Usage Time: 4 hours Description: 10W, USB C interface for power supply, can be powered by power bank with built in battery, approximately 4 hours of continuous use, 6.35mm universal input interface plug and play . Package List: 1 x Amplifier 1 x Charging Cable