Features: Premium eletric violin-ammoon 4/4 size violin with glossy varnished surface, comes with headphone, 6.35mm cable and carrying bag. Hand-carved solid wood body, exquisite solid wood fingerboard, pegs, chin rest and aluminum alloy tailpiece, all come out high quality. Volume and tone control can be accessible with the knobs behind the violin, smooth rotation, free to control. 3.5mm output jack for headphone monitoring, microphone and phone input interfaces let it more versatile to play. The violin is powered by one piece 9V Alkaline battery, the battery is not included in the package.