Check the listing for details. electric guitar travel built in effect drum silent portable. Condition: New. Listed at 369.99 USD. this is a multi-function guitar:1connect amplifier directly without battery like normal guitar.2.connect amplifier directly with battery and use the effect inside(also can close the effect,only use the clear sound).3. connect headphone directly with battery and use the effect inside(also can close the effect,only use the clear sound).4.the effect inside can replace outside effect pedal,no need to take extra lines,easy to take,very good to practice yourself or perform on stage.5.this is a silent guitar,you can practice yourself and don't disturb other people.6.this guitar have Aux in plug,you can play with backing track.we have sold the guitar with electronic system inside more than 5 years in domestic market,all that system is very stable,that systems are all worked well in the past 5 years.anyway we will offer repair service,you can contact us anytime if you find a electronic problem,no worry about that.the package do not including battery,as the express reject battery on airplane,so please prepare the battery yourself.SPECIFICATION:Scale length: 25.5"/22FretsBody: Mahogany Neck: Roasted Maple Neck and Bridge Nut:BoneFingerboard: rosewood Construction: Bolt-on-neckBridge:Tremolo Bridge Pickup:Humbucker*2