Features: 15W portable acoustic guitar amplifier 1:1 restore the guitar tone, providing you with professional and powerful guitar sound. Supports microphone input, and the microphone channel is embedded 2-band EQ(bass/treble) adjustment and reverb effect to achieve voice modification function. Compatible with most BT devices, such as smartphone, tablet, laptop and so on, you can play accompaniment music while do guitar practice or enjoy the fun of music listening. Built-in large capacity rechargeable battery, 2 hours charging time and 4-8 hours working time, no need of external power supply, just enjoy the music anytime anywhere. Delicate imitation wood grain shell and compact size design, the guitar amplifier can be easily carried anywhere via the strap, which makes it quite suitable for travel use.Specifications: Model: AC-15 Rated Power: 15W Peak Power: 30W Speaker Unit: full frequency 5.5 inches SNR: 85dB(mic channel), 95dB(guitar channel) Input Impedance: 10Kohm(mic channel), 2Kohm(guitar channel) Equalization: bass--12dB 125Hz, treble--12dB 8KHz Frequency Response: 20Hz-20kHz Power Supply: Built-in 7.4V 2000mAH Lithium Battery Recharge Socket: micro USB 5V/2A BT Version: 5.0, 15m effective distance Item Size: 21.5 16 16cm/ 8.5 6.3 6.3in Item Weight: approx. 2000g/ 4.4lbs Note: Guitar showed in the picture is not included Package List: 1 Amplifier 1 USB Charging Cable 1 Hand Strap 1 Users' Manual(English & French & German & Italian & Spanish & Japanese).