... convenient to carry, easy to operate, it can be used for iPhone 4, iPhone 3GS, iPhone 3G, iPod touch 4 ... carry.The 6.35mm input jack is designed for guitar, bass, and also applicable for keyboards, microphones, mixers etc.The 6. ... , tone generators, recorders, amps etc.It can be used for iPhone 4, iPhone 3GS, iPhone 3G, iPod touch 4, ... 10.5 * 9.5 * 2.2cmItem Includes: 1 * Guitar/Bass to iPhone converter