Features: Mini Guitar Amplifier: The portable amp Features full analog audio processing, distortion/clean control. Built-instereo output can deliver dynamic music for electric guitar playing. Gain/ Tone/ Volume Control: Gain and tone can be both accessible with rotary knob, screw the On/Off and master knob to power on/off and adjust volume, convenient to control. Bluetooth Wireless Connection: It can connect with your phone or computer via BLE 5.0 connection for music background company with instrument, or as a independent dynamic speaker for music enjoy. 3.5mm Monitor & 6.35mm Input: Connect your guitar/bass or other instrument with the speaker via 6.35mm plug, to enjoy pure music with speaker playing or headphone via 3.5mm monitor jack. Built-in Rechargeable Battery: Built-in 2200mAh battery can provides over 8 hours lasting work, full recharged in 3.5 hours with Type-C USB cable included via computer, power bank or power adapter. Specifications: Brand: AROMA Model: AG-05 Color: Black Material: Plastic Power Output: Max.5W Bluetooth Version: 5.0 Dynamic Range: 96dB THD+N: 0.05% Sampling Frequency: 24 bit / 44.1kHz Power Supply: 7.4V/2200mAh rechargeable battery Charge Input: 5V/2A Full Charging Time: About 3.5 hours in DC5V/2A Working Time: About 8 hours Dimension: 12.5 * 9 * 8cm / 4.92 * 3.54 * 3.15in Net Weight: 458g / 16.15oz Package Size: 15 * 13.5 * 11cm / 5.91 * 5.31 * 4.33in Package Weight: 570g / 20.1oz Packing List: 1 * AC-05 Bluetooth Speaker 1 * USB-C Charging Cable 1 * User Manual