guitar amp/amplifier, for electric and acoustic guitars 5w portable with recording, playback functions rechargeable easy to carry. aroma features: 1) built in speaker, work without headphones when you plug it into the guitar, perfect to take around (rechargeable) to play with others or outside. 2) it has a standard guitar input jack that accepts a standard 1/4" guitar cable 3) all-in-one solution: - guitar amp (with overdrive and tone control) - microphone input - headphones out - aux input (for mp3 player, phone or even extension speaker for pc / laptop) - embedded mp3 player (5 eq options) - embedded recorder (can record, all sources at the same time, guitar, mic and aux!) - usb sound card specifications: 1. output watt: 5w 2. frequency range: 25 hz – 20 khz 3. sensitivity: 600mv +/- 50 mv 4. impedance: 4 5. snr: >= 70 db 6. mp3 distortion: 0.3% 7. battery: li battery 3.7v / 1500 mah 8. recharging voltage: usb/dc5v 9. dimension: 98 x 139 x 46mm 10. weight: 260g 1 * mini guitar amp 1 * usb cable